Abraham Monnikendam was a son of Simon Monnikendam and Carloline Kesing. He married in Amstedam on 21 May 1922 to Fanny de Horst, daughter of Jacob de Horst and Naatje Nias. The couple had one son Jacob.
City Archive of Amsterdam, archive cards of Simon Monnikendam, Abraham Monnikendam and website www.wiewaswie.nl.