Izaak Philip Reindorp was a son of Hartog Reindorp (deceased 15 Mei 1931 in Apeldoorn) and Esther Croese (burial in Diemen 30 April 1925). He had four other brothers and one sister: Annaatje, Asser Abraham, Mozes, Joseph and Asser, who died only 3 years old in September 1896.
Izaak Philip Reindorp married in Amsterdam on 1 May 1924 to Vogelina Veffer, daughter of Hijman Veffer and Golda Veldman.
City Archive of Amsterdam, family registration card of Hartog Reindorp, website www.wiewaswie.nl and www.dutchjewry.org/burial permits.
According to a list with shops of Jewish owners, compiled by the Amsterdam police in 1940, Izaak Reindorp and his wife had a dairy and cheese shop, address: Nieuwe Kerkstraat 71 in Amsterdam.
Abstracts of the police archives which are currently at the Amsterdam municipal archives