Roosje Mok was a daughter from Isaac Aron Mok and Jeannette Natkiel. She married 5 April 1933 the widower Isaäc Kater, a son of Levie Isaac Kater and Marianna Leendert Peper. Isaac Kater was previously married to Judith Erwteman, with whom he had eight children. She passed away on 2 April 1932 and has been interred in the Jewish Cemetery in Muiderberg.
Levie and Gerrit died as babies. Elisabeth passed away at the age of 39 in 1933 but Louis, Juda, Marianna, Clara and again a Gerrit, were married already, had their own families and lived at other addresses but were all – together with their families – killed in the Shoah.
From the second marriage of Isaäc Kater and Roosje Mok, another two children were born: Sara and Israël. They lived still at home with their parents and were killed in the Shoah too.
Isaäc Kater was a diamond polisher and passed away 15 May 1941 in Amsterdam. He was interred in the Jewish Cemetery at Muiderberg. On the other hand, his wife Roosje Mok was registered in Westerbork on 14 January 1943 and stayed in barrack 73. She was put on transport to Auschwitz on 23 January 1943 and on arrival there on 26 January 1943 immediately killed.
Of the both still at home living children was Sara carried off 10 February 1943 to concentration camp Vught where she stayed nine months, then on 15 November 1943 she was deported in a direct transport from Vught to Auschwitz. This transport included 1149 persons and arrived there presumably 17 or 18 November. Eventually Sara Kater lost her life there on 31 January 1944.
Israël Kater was arrested during the big raids in Amsterdam and carried off between 3 and 5 October 1942 to Westerbork. He was put on transport to Auschwitz already 9 October to Auschwitz. This transport with over 1700 deportees arrive in Auschwitz 11 ofr 12 October 1942 where Israël was selected as “laborer”, in or outside the camp. Eventually, Israël Kater has lost his life in Auschwitz on 31 January 1943.
Sources among others: City archive of Amsterdam, family registration card of Isaäc Kater; archive cards of Isaäc Kater and Roosje Mok; the file cabinet of the Jewish Council, registration cards of Isaäc Kater, Roosje Mok, Sara Kater and Israël Kater.