He is married to Bouke Klaassens.
They got married on January 22, 1774 at Loppersum, Gemeente Loppersum, Groningen, Netherlands.
Marriage contract closed January 19, 1774 in Loppersum, Gemeente Loppersum, Groningen, Netherlands.Source 1
Marriage contract 1774 :
Jacob Willems - vader
Willem Jacobs - broer
Sijmen Jacobs - broer
Derk Jacobs - broer
Evert Pieters - zwager, e.v. Geeske Jacobs
Geeske Jacobs - zuster
Fivelingo or Fivelgo is a historical region and one of the Ommelanden (shires) in the province of Groningen. It was located southeast of Hunsingo, northeast of Gorecht, and northwest of Oldambt, and southwest of the Wadden Sea. Fivelingo was named after the historical river Fivel./ Alle Groningers