Jona Visser was a son of Mozes Visser and Esther Hakker. He married Anna Leeuwin in Amsterdam on 19 January 1911, a daughter of Aron Levie Leeuwin and Judith Delmonte. The couple had one daughter, Esther who was born in 1912. In October 1914 the family was registered in the Peoples Registry as citizens of Rotterdam.
City Archive of Rotterdam, family registration card of Jona Visser and website www…