He is married to Berentjen Olbering.
They got married on February 28, 1680 at Markelo (Ov).
Bron FamilySearch
akte 28 feb 1680 Markelo (Ov), trouwen Gerrit Berendsen Voortman x Berentjen Olbering (Bruidegom)
url (#https://familysearch.org/ark:/61903/3:1:3QS7-L9CH-7DM9?i=45&wc=SBFL-C65%3A381641201%2C381742001%2C381742201%3Fcc%3D2037905&cc=2037905#)