(1) He is married to Catelijn Jacobs.
Permission for the marriage has been obtained in Ossenisse on June 17, 1676.Source 1
They got married on July 12, 1676 at Ossenisse.Source 1otr. 17 jun 1676; tr. 12 jul 1676; bdg. Engel de Knibber jm van Denderhoutem; br. Catelijn Jacobs jd van Ossenisse; opm. beijde woonghtigh alhier; getuijgen Aernout de Knibber, Jan de Kock, Neeltjen Willemsen, Janneken Kooijmans
(2) He is married to Maria Schoemakers.
Permission for the marriage has been obtained in Hontenisse on April 24, 1688.Source 2
datum: 24 apr 1688; naam bruidegom: Engel de Knibber; weduwnaar van: Catharina Jacobs; naam bruid: Maria Schoemakers; scan: 23; link naar scan: https://www.familysearch.org/ark:/61903/3:1:3QS7-89QJ-34TT?i=22&cc=2036997
(3) He is married to Anna Kleijnemulder.
Permission for the marriage has been obtained in Hontenisse on April 2, 1689.Source 2
datum: 2 apr 1689; naam bruidegom: Engel de Knibber; weduwnaar van: Maria Schoemakers; naam bruid: Anna Cleijnemulders; scan: 25; link naar scan: https://www.familysearch.org/ark:/61903/3:1:3QS7-L9QJ-34DD?i=24&cc=2036997
Ossenisse ondertrouw 1648-1682 https://www.geneaknowhow.net/script/zee/Ossenisse_ondertrouw_1648-1682.pdf
Trouwen Hontenisse 1648-1793 (verschijnt binnenkort online)