(1) He is married to Jantje Pieters.
They got married before 1761.
(2) He is married to Anje Cornelis Wiersum.
They got married in the year 1779.
Marriage contract closed June 21, 1779 in Menkeweer, Gemeente Bedum, Groningen, Netherlands.Source 1
Marriage contract 1779:
Ida Pieters - dochter
Fredericus Janssenius - zwager, e.v. Geertruid Pieters
Geertruid Pieters - dochter
Willem Pieters - oom en voormond over bruidegoms minderjarige kinderen bij Jantje Pieters
Jantje Pieters - overleden echtgenote