(1) He is married to (Not public).
They got married
(2) He is married to Grietie Cornelisdr Cole.
Permission for the marriage has been obtained in Yerseke on January 25, 1682.Source 1
They got married on March 2, 1682 at Kruiningen.Source 1135. Otr. 25 januari Yerseke, Tr. 2 maart, Johannes Gillis Onderdijk, wr. Tanneke Jacobs, wonende St. Joosland, en Grietie Cornelisdr. Cole, wed. Leendert Willems, wonende te Kruiningen.
Kruiningen index ref. trouwen 1671-1810 https://geneaknowhow.net/script/zee/Trouwen%20Kruiningen%201671-1810.pdf