Isaac married Henrietta Tobias. Henrietta was born on 14 Aug 1847 in New York; died on 25 Apr 1921 in Valatie, New York. [Group Sheet] [Family Chart]
Johannas married Albertine. [Group Sheet] [Family Chart]
Notes:
Died: Some sources claim 1775 as year of death, but that's before date of marriage.
Isaac married Margaret Van Alen in Feb 1805. Margaret was born on 15 Sep 1774. [Group Sheet] [Family Chart]