Monthly Archives: August 2023

Isaak Rosenberg: A Family With No Survivors

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The youngest child of Rebecca Blumenfeld and Mendel Rosenberg was their son Isaak. As we saw, Isaak was born in Rosenthal, Germany, on June 15, 1892, and on December 22, 1922, he married Bella Gans, daughter of Jacob Gans and Esther Ehrenreich, in Niederaula, Germany.

Isaak and Bella had one child, a daughter Rita Rosenberg, born on April 29, 1924 in Frankfurt.

Unfortunately, all of them—Isaak, Bella, and Rita—were murdered by the Nazis. According to Yad Vashem, Isaak was deported from Frankfurt on August 10, 1942, and sent to the concentration camp in Majdanek, Poland, where he was murdered. His wife Bella’s nephew Israel Gans filed this Page of Testimony at Yad Vashem in his memory. The Hebrew written where it says “circumstances of death” merely says “perished in the Holocaust.” (Thank you to Hanna Gafni of Tracing the Tribe on Facebook for translating this line on this Page and the two below.)

The information available regarding the fates of Bella and Rita is far less specific. The Gedenbuch (Memorial Book) only reports that Bella was deported to Poland and killed there; perhaps she was deported on the same date as Isaak and to the same camp, but that isn’t stated. Nor does the Page of Testimony filed at Yad Vashem by Bella’s nephew Israel Gans provide any further details. The line for “Circumstances of Death” translates as “deported to Poland. Her fate is not known. Perished in the Holocaust.”

The information about Rita is even more limited. The Gedenbuch doesn’t even have information about where she was deported to or killed nor does her cousin Israel Gans’ Page of Testimony for her. The Hebrew written where it says “circumstances of death” says “perished in the Holocaust.”


This may be the first time that I have learned of family members who were killed in the Holocaust for whom there are no recorded details of their fates. Did Bella and Rita accompany Isaak to Majdanek? Or was the family separated? The lack of information somehow makes their deaths sting even more. The fact that the Nazis didn’t even document their murders makes it more likely that those deaths would have been somehow swept under the rug. So it is my task here to make sure that their lives and their murders are not forgotten.

That brings me to the end of the story of Rebecca Blumenfeld Rosenberg, the seventh child of Isaak Blumenfeld I and Gelle Strauss. Although Rebecca lost one son, Willi, as a young adult, and her son Isaak and his family were all murdered in the Holocaust, she was survived by seven grandchildren and has descendants still living today in Israel and the United States.

Next I turn to Rebecca’s younger sister, Friederike Blumenfeld, the eighth child of Isaak Blumenfeld I and Gelle Strauss and the last of their children to live to adulthood.

Genealogy Fun: How My Friend and I Discovered We Have Mutual Cousins

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One of the first people I ever met who did genealogy research is my friend Amanda Katz Jermyn. I met Amanda through mutual friends over thirty years ago, and we have been members of the same small havurah group for many years now. When Amanda long ago described her genealogy research and the connections and stories she had found, I was amazed. She helped to inspire me to start my own journey.

Amanda and I both have paternal ancestry from Germany, and over the years we’ve wondered whether we would ever find an overlap in our German Jewish ancestry. Well, I finally found one, although it is very attenuated and only by marriage. Nevertheless it was fun to find this connection.1 Here’s the story of my third cousin, twice removed, Moritz Rosenberg, and his wife Berta Blum, Amanda’s third cousin, once removed.

As we saw in my earlier post, Moritz, the third child of Rebecca Blumenfeld and Mendel Rosenberg, was born on September 15, 1887, in Rosenthal, Germany, and married Berta Blum on August 10, 1919, in Frankenau, Germany. Berta was born on September 5, 1896, in Frankenau to Elias Blum and Amalie Katz.

Marriage of Moritz Rosenberg and Berta Blum, Hessisches Hauptstaatsarchiv; Wiesbaden, Deutschland; Signatur: 3254, Year Range: 1919, Ancestry.com. Hesse, Germany, Marriages, 1849-1930

Moritz and Berta had two children, Jacob (later Theodore), born on January 17, 1921,2 and Rebecca (later Ruth), born on January 4, 1925, both in Rosenthal, Germany.3

Moritz and his family were among the very fortunate ones who all were able to escape safely from Nazi Germany. Moritz, Berta, and their 13-year-old daughter Rebecca arrived in New York on September 15, 1938. Moritz listed his occupation as a butcher. Berta’s cousin Herman Blum was listed as the person they knew in the US.4

It took me longer to find out when Jacob arrived in the US because I was searching for him as Jacob, as that is how he was listed on Moritz’s naturalization petition. But the 1940 census has him identified as Theodore (and Rebecca as Ruth),5 and that gave me the necessary clue to find Jacob a/k/a Theodore’s naturalization petition. He arrived in the US as a 16-year-old on May 15, 1937. And on his 1942 petition he used his newly adopted name, Theodore.

Moritz Rosenberg, Declaration of Intention, (Roll 548) Declarations of Intention For Citizenship, 1842-1959 (No 426401-427400), Ancestry.com. New York, U.S., State and Federal Naturalization Records, 1794-1943

Theodore Jack Rosenberg a/k/a Jakob Teo Rosenberg, Declaration of Intention, The National Archives at Philadelphia; Philadelphia, PA; NAI Title: Declarations of Intention For Citizenship, 1/19/1842 – 10/29/1959; NAI Number: 4713410; Record Group Title: Records of District Courts of the United States, 1685-2009; Record Group Number: 21, Description: (Roll 561) Declarations of Intention For Citizenship, 1842-1959 (No 438701-439600), Ancestry.com. New York, U.S., State and Federal Naturalization Records, 1794-1943

The date of his arrival helped me locate Theodore’s ship manifest, where he identified his father as the person he was leaving behind, and his uncle, Herman Blum, as the person he was going to in the US. He is identified as Teo Rosenberg. (See the last line on the image below.)

Teo Rosenberg, ship manifest, The National Archives and Records Administration; Washington, D.C.; Passenger and Crew Lists of Vessels Arriving at and Departing from Ogdensburg, New York, 5/27/1948 – 11/28/1972; Microfilm Serial or NAID: T715, 1897-1957, Ship or Roll Number: Manhattan, Ancestry.com. New York, U.S., Arriving Passenger and Crew Lists (including Castle Garden and Ellis Island), 1820-1957

In 1940, Moritz, Berta, and both of their children were living in New York City. Moritz and Berta were both working as salespeople for a wholesale dress business, and Theodore was a handyman for a venetian blinds company. They also had four lodgers living with them.

Moritz Rosenberg and family, 1940 US Census, Year: 1940; Census Place: New York, New York, New York; Roll: m-t0627-02670; Page: 1A; Enumeration District: 31-1885, Ancestry.com. 1940 United States Federal Census

But while I was searching for information about Theodore/Jacob, I found Moritz and Berta and their children on an Ancestry family tree called the 2020 Jermyn Tree, owned by someone with a memorable name, James Bond. I might have thought that that name was a pseudonym, but fortunately I knew that my friend Amanda had a distant cousin with that name. So seeing the title with her surname and the name of the owner, I assumed there had to be some connection between my relative Moritz Rosenberg and his family and my friend Amanda.

Although Amanda’s name wasn’t revealed on the tree since she is still living, I knew her parents’ names, and they were on the tree. The connection appeared to be through Moritz Rosenberg’s wife Berta Blum, whose mother was Amalie Katz, but I couldn’t quite sort out how Robert Katz, Amanda’s father, was related to Amalie Katz.

I contacted Amanda, and she confirmed the connection and said that Berta Blum was in fact her relative—her third cousin, once removed, through Berta’s mother Amalie Katz and Amanda’s father Robert Katz. Even better, Amanda had been in touch with Moritz and Berta’s daughter Ruth (born Rebecca) and was able to provide me with more information about Ruth and her brother Theodore and their children.

For example, Amanda shared that Ruth had told her that her brother Theodore had enlisted in the US Army in the intelligence division and that the army had him change his surname from Rosenberg to Rogers since he was being sent to Germany. This helped me locate Theodore’s draft registration, which I had had trouble locating when searching for Theodore Rosenberg.

Theodore registered for the draft on February 15, 1942, and was still working for the venetian blinds company at that time. As you can see, he crossed out Rosenberg on his draft registration and inserted Rogers as his surname.

Theodore Rosenberg/Rogers, World War II draft registration, National Archives at St. Louis; St. Louis, Missouri; Wwii Draft Registration Cards For New York City, 10/16/1940 – 03/31/1947; Record Group: Records of the Selective Service System, 147, Ancestry.com. U.S., World War II Draft Cards Young Men, 1940-1947

Ruth Rosenberg married Henry Hammer (born Hammerschlag) after the war; their New York City marriage license is dated June 12, 1945.6 Henry was born on March 29, 1919, in Giessen, Germany.7 In 1950, Ruth and Henry were living in New York City, and Henry was working as a salesman for wholesale dry goods company. Ruth and Henry would have two children.8

Meanwhile, in 1950, Moritz, Berta, and Theodore were living together (along with Berta’s mother Amalie Blum) in New York City. Moritz and Berta now were in the wholesale liquor business together, and Theodore was continuing to sell venetian blinds.

National Archives at Washington, DC; Washington, D.C.; Seventeenth Census of the United States, 1950; Year: 1950; Census Place: New York, New York, New York; Roll: 4547; Page: 3; Enumeration District: 31-1731, Ancestry.com. 1950 United States Federal Census

Theodore didn’t marry until 1960 when he was 39 years old.9 His wife was Sylvia Kapp (originally Kappenmacher), born on February 20, 1938, in Port Elizabeth, South Africa, to Willi Kappenmacher and Erna Wolf. Sylvia and her parents had immigrated to the US on June 8, 1946,10 and were living in New York City in 1950. Theodore and Sylvia had two children born in the 1960s.

Sadly, those children lost their father when they were very young as Theodore died on November 13, 1971, at the age of fifty.11 He was survived not only by his wife and children, but also by both of his parents and his sister Ruth and her family.

Fortunately, Theodore’s father and especially his mother and sister were graced with very long lives. Moritz Rosenberg died on September 22, 1976, five years after his son. He had turned 89 years old just a week before.12

Berta Blum Rosenberg achieved a remarkable distinction—living to 112 years and becoming the oldest living Jewish person in the world at that time, as reported in her obituary in the January 30, 2009, Hackensack (NJ) Record:

Berta Blum Rosenberg obit

The Record Hackensack, New Jersey • Fri, Jan 30, 2009 Page L6

Berta died on January 28, 2009, in New York.13 She was survived by her daughter Ruth and her grandchildren and great-grandchildren.

Her daughter Ruth also lived a long life. She died on March 8, 2021, at the age in 96; her husband Henry Hammer had predeceased her by many years, having passed away on May 17, 1986, at the age of 67.14 Ruth was survived by her children and grandchildren as well as the children and grandchildren of her brother Theodore.

Those children and grandchildren of Ruth and Theodore create a link between my friend Amanda and myself. They are our mutual cousins—the descendants of my cousin, Moritz Rosenberg, and Amanda’s cousin, Berta Blum.

Isn’t genealogy fun?

  1. Amanda also shares some DNA with my husband, but given the different ancestral homes of each of them and the very small amount of DNA shared, it is likely just endogamy. ↩
  2. Theodore Jack Rosenberg a/k/a Jakob Teo Rosenberg, Declaration of Intention, The National Archives at Philadelphia; Philadelphia, PA; NAI Title: Declarations of Intention For Citizenship, 1/19/1842 – 10/29/1959; NAI Number: 4713410; Record Group Title: Records of District Courts of the United States, 1685-2009; Record Group Number: 21, Description: (Roll 561) Declarations of Intention For Citizenship, 1842-1959 (No 438701-439600), Ancestry.com. New York, U.S., State and Federal Naturalization Records, 1794-1943 ↩
  3. Moritz Rosenberg, Declaration of Intention, (Roll 548) Declarations of Intention For Citizenship, 1842-1959 (No 426401-427400), Ancestry.com. New York, U.S., State and Federal Naturalization Records, 1794-1943 ↩
  4. Ibid. ↩
  5. Moritz Rosenberg and family, 1940 US Census, Year: 1940; Census Place: New York, New York, New York; Roll: m-t0627-02670; Page: 1A; Enumeration District: 31-1885, Ancestry.com. 1940 United States Federal Census. See image below. ↩
  6. Ruth R Rosenberg, Gender Female, Marriage License Date 12 Jun 1945
    Marriage License Place Manhattan, New York City, New York, USA, Spouse Henry M Hammer. License Number 14437, New York City Municipal Archives; New York, New York; Borough: Manhattan; Volume Number: 21, Ancestry.com. New York, New York, U.S., Marriage License Indexes, 1907-2018 ↩
  7. Henry Hammerschlag World War II draft registration, National Archives at St. Louis; St. Louis, Missouri; Wwii Draft Registration Cards For New York City, 10/16/1940 – 03/31/1947; Record Group: Records of the Selective Service System, 147, Ancestry.com. U.S., World War II Draft Cards Young Men, 1940-1947 ↩
  8. Henry Hammer and family, 1950 US census, National Archives at Washington, DC; Washington, D.C.; Seventeenth Census of the United States, 1950; Year: 1950; Census Place: New York, New York, New York; Roll: 4377; Page: 19; Enumeration District: 31-2183, Ancestry.com. 1950 United States Federal Census ↩
  9. Theodore Rogers, Gender Male, Marriage License Date 1960, Marriage License Place Manhattan, New York City, New York, USA, Spouse Sylvia Kapp, License Number 11021, New York City Municipal Archives; New York, New York; Borough: Manhattan, Ancestry.com. New York, New York, U.S., Marriage License Indexes, 1907-2018 ↩
  10. Kappenmacher, ship manifest, The National Archives and Records Administration; Washington, D.C.; Passenger and Crew Lists of Vessels Arriving at and Departing from Ogdensburg, New York, 5/27/1948 – 11/28/1972; Microfilm Serial or NAID: T715, 1897-1957, Ship or Roll Number: Marine Tiger, Ancestry.com. New York, U.S., Arriving Passenger and Crew Lists (including Castle Garden and Ellis Island), 1820-1957.  Erna Kapp, SSACI, Ancestry.com. U.S., Social Security Applications and Claims Index, 1936-2007. ↩
  11. Theodore Rogers, Birth Date 17 Jan 1921, Death Date 13 Nov 1971, SSN 116105571, Enlistment Branch ARMY, Enlistment Date 3 Mar 1943, Discharge Date 23 Dec 1945, Ancestry.com. U.S., Department of Veterans Affairs BIRLS Death File, 1850-2010 ↩
  12. Moritz Rosenberg, SSDI, Social Security Administration; Washington D.C., USA; Social Security Death Index, Master File, Ancestry.com. U.S., Social Security Death Index, 1935-2014. Headstone at Find a Grave, database and images (https://www.findagrave.com/memorial/36414768/moritz-rosenberg: accessed 07 August 2023), memorial page for Moritz Rosenberg (15 Sep 1887–Sep 1976), Find a Grave Memorial ID 36414768, citing Cedar Park Cemetery, Paramus, Bergen County, New Jersey, USA; Maintained by dalya d (contributor 46972551). ↩
  13. Berta Rosenberg, SSDI, Social Security Administration; Washington D.C., USA; Social Security Death Index, Master File, Ancestry.com. U.S., Social Security Death Index, 1935-2014 ↩
  14. Henry Hammer, Age 67, Birth Date 29 Mar 1919, Death Date 17 May 1986
    Death Place North Bergen, Hudson, New Jersey, USA, New Jersey State Archives; Trenton, New Jersey; New Jersey, Death Indexes, 1904-2000, Ancestry.com. New Jersey, U.S., Death Index, 1848-1878, 1901-2017 ↩

Rebecca Blumenfeld Rosenberg’s Daughter-in-Law Bella: An Admirable Woman

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Rebecca Blumenfeld and Mendel Rosenberg’s second child was their son Joseph. As we saw, Joseph was born on February 4, 1886, in Rosenthal, Germany, and married Bella Oppenheim on February 21, 1913, in Bad Hersfeld, Germany. Bella was born there on June 8, 1891, to Aron Oppenheim and Hannchen Klebe. Bella’s sister Emma Oppenheim had married Meier Blumenfeld III on April 5, 1905, in Bad Hersfeld. Meier, the son of Giedel Blumenfeld and Gerson Blumenfeld, her first cousin, once removed, was thus Joseph Rosenberg’s first cousin, since their mothers Giedel and Rebecca were sisters.

Joseph and Bella had one child, Kurt, born in Sobernheim, Germany, on April 20, 1914.1 As I wrote in my earlier post, Sobernheim is not in the Hesse region where both Joseph and Bella were born and raised and where they married, but over 160 miles away in the Rhine Palatinate region.

Tragically, as we saw, Joseph, who was a doctor, died on May 4, 1922, at the age of 36, and was buried in Frankfurt, so perhaps he and his family had relocated from Sobernheim. His son Kurt was only eight years old when he lost his father.

Bella remarried a year after losing Joseph. Her second husband was Arthur Marx, born in Kempten, Germany, on August 4, 1890. They married in Frankfurt on June 22, 1923, in Frankfurt, and were living in Frankfurt.

Marriage of Bella Oppenheim Rosenberg to Arthur Marx, Hessisches Hauptstaatsarchiv; Wiesbaden, Deutschland; Bestand: 903, Year Range: 1923, Ancestry.com. Hesse, Germany, Marriages, 1849-1930

Kurt immigrated to the United States on October 16, 1937, when he was 23.2 His mother Bella and stepfather Arthur left Germany for the United States on May 27, 1938, and arrived in New York on June 2, 1938.

Arthur and Bella Marx passenger manifest, Year: 1938; Arrival: New York, New York, USA; Microfilm Serial: T715, 1897-1957; Line: 5; Page Number: 142, Ship or Roll Number: Europa, 
Ancestry.com. New York, U.S., Arriving Passenger and Crew Lists (including Castle Garden and Ellis Island), 1820-1957

Bella Oppenheim Rosenberg Marx then played a pivotal role in saving her niece Ruth Blumenfeld, the daughter of Emma Oppenheim and Meier Blumenfeld III, as I wrote about here. According to Ruth’s grandson Matthew, Bella, Ruth’s aunt, sponsored Ruth’s entry into the United States on March 4, 1940. Ruth was the only member of Emma and Meier’s family to survive the Holocaust. Her parents and her two sisters and their families were murdered by the Nazis. Matthew shared this photograph of Bella with her niece Ruth and Ruth’s husband Leo Friedman.

Bella Oppenheim Marx, Leo Friedman, and Ruth Blumenfeld Friedman. Courtesy of Matthew Steinhart

On the 1940 census, Bella and Arthur were living in Brooklyn, New York, and Arthur was working as a bank clerk and Bella as a practical nurse. They had two boarders living with them in addition to a niece (not Ruth), but not their son Kurt.

Arthur Marx and family 1940 US census, Year: 1940; Census Place: New York, Kings, New York; Roll: m-t0627-02580; Page: 4B; Enumeration District: 24-1310, Ancestry.com. 1940 United States Federal Census

Kurt, like his father Joseph, had become a doctor and was residing at Boulevard Hospital in Queens, New York, at the time of the 1940 census.2 He registered for the draft on October 16, 1940.

Kurt Rosenberg World War II draft registration, National Archives at St. Louis; St. Louis, Missouri; Wwii Draft Registration Cards For New York City, 10/16/1940 – 03/31/1947; Record Group: Records of the Selective Service System, 147, Ancestry.com. U.S., World War II Draft Cards Young Men, 1940-1947

After the war Kurt married Gertrude Stein,3 and in 1950 they were living in Queens and Kurt was practicing medicine.4 Kurt and Gertrude would have three children.

Unfortunately, like his father before him, Kurt died too young. He was 56 years old when he died suddenly on January 28, 1970, at the hospital where he worked as a gynecologist in Queens, New York. He was survived by his wife and children as well as his mother Bella.5

Bella died at the age of 94 on December 22, 1985.6 She had outlived her first husband Joseph Rosenberg and then her second husband Arthur Marx, who died on November 14, 1963, as well her son Kurt.7 She also had outlived her niece Ruth Blumenfeld Friedman, whose life she had helped to save back in 1940. Although she was only related to me by her marriage to my cousin Joseph Rosenberg, I feel a deep respect and a connection to her because of the life she lived and the things she endured along the way.

  1. Kurt Rosenberg, World War II draft registration, National Archives at St. Louis; St. Louis, Missouri; Wwii Draft Registration Cards For New York City, 10/16/1940 – 03/31/1947; Record Group: Records of the Selective Service System, 147, Ancestry.com. U.S., World War II Draft Cards Young Men, 1940-1947 ↩
  2. Kurt Rosenberg, 1940 US census, Year: 1940; Census Place: New York, Queens, New York; Roll: m-t0627-02721; Page: 7A; Enumeration District: 41-105, Ancestry.com. 1940 United States Federal Census ↩ ↩
  3.  New York City Municipal Archives; New York, New York; Borough: Queens, Ancestry.com. New York, New York, U.S., Marriage License Indexes, 1907-2018 ↩
  4. Kurt Rosenberg and family, 1950 US census, United States of America, Bureau of the Census; Washington, D.C.; Seventeenth Census of the United States, 1950; Record Group: Records of the Bureau of the Census, 1790-2007; Record Group Number: 29; Residence Date: 1950; Home in 1950: New York, Queens, New York; Roll: 4301; Sheet Number: 10; Enumeration District: 41-1012, Ancestry.com. 1950 United States Federal Census ↩
  5. Obituary for Kurt Rosenberg, Daily News, New York, New York, Thu, Jan 29, 1970
    Page 318. Kurt Rosenberg, Gender Male, Birth Date 20 Apr 1914, Death Date Jan 1970
    Claim Date 7 Mar 1970, SSN 072164680, Ancestry.com. U.S., Social Security Applications and Claims Index, 1936-2007 ↩
  6. Bella Marx, Social Security Number 079-22-4508, Birth Date 8 Jun 1891, Issue year Before 1951, Issue State New York, Last Residence 11375, Flushing, Queens, New York, USA, Death Date Dec 1985, Social Security Administration; Washington D.C., USA; Social Security Death Index, Master File, Ancestry.com. U.S., Social Security Death Index, 1935-2014; Find a Grave, database and images (https://www.findagrave.com/memorial/77845632/bella-marx: accessed 29 May 2023), memorial page for Bella Marx (unknown–22 Dec 1985), Find a Grave Memorial ID 77845632, citing Mount Hebron Cemetery, Flushing, Queens County, New York, USA; Maintained by Athanatos (contributor 46907585). ↩
  7. Arthur Marx, Age 73, Birth Date abt 1890, Death Date 14 Nov 1963, Death Place Queens, New York, New York, USA, Certificate Number 14536, Ancestry.com. New York, New York, U.S., Death Index, 1949-1965 ↩