He is married to Pieternella van Nuffelen.
Permission for the marriage has been obtained in Hontenisse on June 14, 1755.Source 1
datum: 14 jun 1755; naam bruidegom: Joos Leenknegt; naam bruid: Pieternella van Nuffelen; weduwe van: Anthonij Gordijn; scan: 191; link naar scan: https://www.familysearch.org/ark:/61903/3:1:3QS7-L9QJ-3HC1?i=190&cc=2036997