(1) He is married to (Not public).
They got married
(2) He is married to Maria Christiaansdr.
Permission for the marriage has been obtained in Kruiningen on March 29, 1754.Source 1
They got married on April 27, 1754 at Kruiningen.Source 1874. Otr. 29 maart, Tr. 27 april, Janus Foortsz. Rijder, laetst wed. van Johanna Stael, woond onder Yerseke, met Maria Christiaansdr., wed. Cornelis [Simonsz.] Danker, woond onder Cruiningen.
Kruiningen index ref. trouwen 1671-1810 https://geneaknowhow.net/script/zee/Trouwen%20Kruiningen%201671-1810.pdf