Jacob d' Ancona was a son of Benjamin d' Ancona and Naatje Lisser. He married de Betje Vries in 1918 in Amsterdam. She passed away in 1939.
Stadsarchief Amsterdam, archiefkaart Jacob d' Ancona
In August 1941, four obituaries were placed in Het Joodsche Weekblad for Jacob d'Ancona. One notice was placed by the board of the N.V. J. Polak's Wholesale Trade in Woollen and Silken Fabrics. Mention is made of the 'Death of our loyal Colleague'.
Het Joodsche Weekblad, 29 August 1941, 11