(1) He is married to (Not public).
They got married
(2) He is married to Maria Claasdr Soeteweij.
Permission for the marriage has been obtained in Kruiningen on September 18, 1750.Source 1
They got married on October 15, 1750 at Kruiningen.Source 1822. Otr. 18 september, Tr. 15 oktober ‘s morgens even over 9 uren, Jan Groenewegen, laatst wr. van Catharina van Driessen, met Maria Claasdr. Soeteweij, geboortig van en wonende beide in Kruiningen.
Kruiningen index ref. trouwen 1671-1810 https://geneaknowhow.net/script/zee/Trouwen%20Kruiningen%201671-1810.pdf