(1) He is married to Janneke de Sweemer.
Permission for the marriage has been obtained in Axel on August 21, 1716.Source 1
They got married at Axel.Source 11716-08-21 (getrouwd), Pieter de Gref wedr. van Marie Jacobs met, Janneke de Swemer wed. van Pieter de Mul
(2) He is married to Maria Jacobs.
Permission for the marriage has been obtained in Terneuzen on July 24, 1706.Source 2
They got married at Hoek.Source 21706-07-24 Pieter de Greef j.m. van Mergton en Maria Jacobs wed. van Jillis Buijgenhout (Hoek)
Axel, transcriptie ref. trouwboek 1604-1648, 1653-1691, 1691-1729, 1729-1749, 1750-1791 en 1791-1796 http://www.geneaknowhow.net/script/zeeland.html
Ref. trouwboek Terneuzen (Neusen) 1631-1697 http://www.geneaknowhow.net/script/dewit/terneuzen-ref-trouwen-1631-1697.htm en Index ref. trouwboek Terneuzen (Neusen) 1697-1796 http://www.geneaknowhow.net/script/dewit/terneuzen-ref-trouwen-1697-1796.htm