Jean Demarest was also known as John Demarest. Jean Demarest was born circa 1645 at Middleburg, Zeeland, Netherlands. He was baptized on 14 April 1645 at Walloon Church, Middleburg, Zeeland, Netherlands. He was the son of
David Des Marets and
Marie Sohier. Jean Demarest married
Jacomina De Ruine, daughter of
Simon De Ruine and
Magdalena Vander Straaten, on 9 September 1668 at Dutch Reformed Church, New Amsterdam, New York County, New York. Jean Demarest was elecketed constable in Harlem in 1670. He was was commisioned a Lieutenant of militia for Bergen County, NJ in 1683. He married
Marretie Jacobse Van Winkle, daughter of
Jacob Walichs and
Trintje Jacobs, on 23 March 1692 at French Church, Kinderkamack, Bergen County, New Jersey. Jean Demarest joined the Dutch Reformed Church, Hackensack, NJ by letter from the French Church, Kinderkamack, NY at Dutch Reformed Church, Hackensack, Bergen County, New Jersey, 10 July 1696. He married
Magdalena Laurens on 20 December 1702 at Dutch Reformed Church, Hackensack, Bergen County, New Jersey. Jean Demarest left a will on 29 March 1714. He died on 16 October 1719 at New Barbados, Bergen County, New Jersey, at age 74. His estate was proved on 10 November 1719.