On 2 Mar 1727 when Douwe was 30, he married Aaltje Ouderkerk (37168) , daughter of Isaac Ouderkerk (ca 1674-20 Oct 1747) & Mayken Van Ness (17996) (ca 1675-20 Oct 1747), in Albany, Albany County, New York. Born on 6 Feb 1704 in Albany, Albany County, New York. Aaltje died in Albany, Albany County, New York, on 6 Jan 1756; she was 51.