Genealogie Bos

This is my English-language Genealogy & Ancestry Blog.
(Mijn Nederlandstalige blog is

10 May 2015

Jacob van Os in Cape Town around 1700

Jacob van Os was baptized on 23-7-1686 in Rotterdam. His baptism was witnessed by Sara Claes. His parents were Casper Jacobse van Os and Claessie Jans van Leeuwen.

When Caspar and Claessie were married in the winter of 1677-78 in Rotterdam, Claessie was a widow. She had a son Isaack from her earlier marriage to Pieter Cornelisz Groen whom Claessie had married in the winter of 1664-65 in Rotterdam. Witnesses to Isaack’s baptism on 3-11-1666 in Rotterdam were Jan Isackx van Leeuwen and Sara Claes. They were Claessie’s parents and had been married on 8-10-1641 in Rotterdam. Sara Claes was a widow of Louris Jansse van Ceulen, whom she had married on 16-12-1636 in Rotterdam.


Jacob van Os departed on 10-5-1712 from Rotterdam as a sailor on the ship "Huis ten Donk", build in 1711 in Rotterdam with a length of 130 voet (9 meters). The ship docked on February 17, 1713, in Cape Town. On April 3 the ship continued its voyage to Batavia in Indonesia, arriving there on July 4, 1713. I can’t trace Jacob van Os in any other voyages for the Dutch East India Company.