Jacob van Os in Cape Town around 1700

Jacob van Os was baptised on 23 July 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 November 1666 in Rotterdam were Jan Isackx van Leeuwen and Sara Claes. They were Claessie’s parents and had been married on 8 October 1641 in Rotterdam. Sara Claes was a widow of Louris Jansse van Ceulen, whom she had married on 16 December 1636 in Rotterdam.

Rotterdam

Jacob van Os departed on 10 May 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 17 February 1713, in Cape Town. On April 3 the ship continued its voyage to Batavia in Indonesia, arriving there on 4 July 1713. I can’t trace Jacob van Os in any other voyages for the Dutch East India Company. 

Jacob van Os married on 8 September 1717, in Cape Town, Johanna ("Jannetje") Grison, widow of Adriaan Smuts. The Cape Munster Roll, compiled on 31st December 1712, contained the Free Settlers Adriaan Smuts & Johanna Grison. They had 3 children baptised in Cape Hope: Michiel, Neeltje and Antonij Smuts.

These are the children Jacob van Os and Jannetje Grison had baptised in Cape Town:

• Cornelia, baptised on 13 July 1716, witnesses: Pieter Grison & Catharina Smits.
• Caspar, baptised in February or March 1719 on the 12th, witnesses: Hermanus Smuts & Johanna Best.
• Neeltje, baptised on 2 February 1721, witnesses: Pieter Grison & Neeltje Andriesz. Neeltje married Johannes Mostert Ernstz., and had a son Jacobus baptised on 12 April 1744, with witnesses Jacobus van Os and Johanna Grison.
• Isaac, baptised on 14 February 1723, witnesses; Isaac Groen & Claasje Jansz van Leeuwen (Jacob's mother).
• Claasje, baptised on 4 February 1725, witnesses: Johannes Arnoldus Roodenwalt & Jannetje Visser.
• Anthonij, baptised on 4 August 1726, witnesses: Hermannus Smuts & Johanna Best.
• Isaac, baptised on 2 November 1727.
• Claasje Sara, baptised on 9 January 1729, witnesses: Hermannus Smuts & Johanna Best.

The Cape of Good Hoop in South Africa

Sources: Cape Town Marriages, Digitale Stamboom Rotterdam, VOC opvarenden.