He is married to Elizabeth de Meulenaar.
Permission for the marriage has been obtained in Hontenisse on June 8, 1737.Source 1
datum: 8 jun 1737; naam bruidegom: Jacobus de Bok; naam bruid: Elizabeth Meulenaar; weduwe van: Joost Mekeerel; scan: 155; link naar scan: https://www.familysearch.org/ark:/61903/3:1:3QS7-99QJ-3HPG?i=154&cc=2036997