Jacob Mok, merchant, was a son of Hijman Philip Mok and Heintje Deetas. He was born in Haarlem on 12 December 1883 and married in Zaandam on 15 August 1918 Henriette van Zanten, a daughter of Samuel van Zanten and Johanna Hartog. The Mok-van Zanten couple had a daughter Henny, who was born in Amsterdam on 21 October 1919.
Jacob, Henriette and Henny lived at various addresses in Amsterdam. But the …