He is married to Johanna de Jager.
Permission for the marriage has been obtained in Yerseke on .Source 1
They got married on April 26, 1719 at Kruiningen.Source 1459. Otr. Yerseke?, Tr. op attestatie van Yerseke 26 april, Pieter Willemsz. Gelow, en Johanna de Jager, beide geboren te Yerseke, af tenminste daar wonende.
Kruiningen index ref. trouwen 1671-1810 https://geneaknowhow.net/script/zee/Trouwen%20Kruiningen%201671-1810.pdf