Juda Pach was a son of Samson Pach and Roosje Delmonte. He married Kitty Lopes Cardozo in Amsterdam on 16 November 1938, a daughter of David Lopes Cardozo and Duifje Kosman. After his marriage Juda and Kitty resided at Weesperstraat 28 III and had two sons: Samson in 1940 and David in 1942. His wife Kitty and both his children have been killed in Sobibor on 26 March 1943. Self, he lost his life on 13 April 1945 in the Extern kommando Gröditz.

City Archive of Amsterdam, archive cards of Juda Pach and Kitty Lopes Cardozo.