He is married to Jantje Harms.
They got married on May 13, 1799 at Kloosterveen, Gemeente Assen, Drenthe, Nederland, he was 27 years old.Source 2
Child(ren):
Overlijdensregister Utrecht 1818, aktenummer 997 [Toegang 481, inv. nr. 432-01, Het Utrechts Archief]
http://alledrenten.nl/akte/jantien-harms-en-jacob-zeijen/C38DD241-9E14-4472-A028-06AB67581664