He is married to Maria Oosterhaagen.
They got married on May 9, 1832 at Amsterdam, North Holland, Netherlands , he was 41 years old.Source 3
Harman De Boer in entry for Anna Alida De Boer, "Netherlands Births and Baptisms, 1564-1910"/ FamilySearch
Hermanus De Boer in entry for Wyntje De Boer, "Netherlands Births and Baptisms, 1564-1910"/ FamilySearch
Maria Oosterhage, "Netherlands Births and Baptisms, 1564-1910"/ FamilySearch