Mozes de Rooy (de Rooij) was a son of Jacob de Rooij and Betje Vischschoonmaker. He married in Amsterdam on 12 April 1923 to Sophia Lever, daughter of Daniel Lever and Saartje Vischschoonmaker. The couple had two children: Betty and Daniel.
City Archive of Amsterdam, archive card of Jacob de Rooij and website www.wiewaswie.nl.