On 4 Oct 1806 when Johannes was 22, he married
Sarah Mandeville, daughter of
Hendrick Mandeville (25 Feb 1760-2 Feb 1847) &
Elizabeth Ryerson (3 Oct 1773-15 Feb 1798), in Pompton Plains, Morris County, New Jersey.
Born on 9 Sep 1787. Sarah was baptized in Pompton Plains, Morris County, New Jersey. Sarah died on 12 Aug 1866; she was 78.