He married Catalyna (Cathryna) Roome . Catalyna (Cathryna) Roome was born at Pompton Plains, Morris, New Jersey 10 Nov 1728 daughter of Peter Pieterse Roome and Johanna or Anna Berry .
They were the parents of 8
children:
Anna Slingerland
born 17 Feb 1749.
John Slingerland
born 1 Aug 1751.
Peter Slingerland
born 8 Jul 1754.
Peter Slingerland
born 19 Mar 1757.
Christina Slingerland
born 15 Mar 1760.
Cornelius Slingerland
born 15 Jan 1763.
Paul Slingerland
born 5 Apr 1766.
Samuel Slingerland
born 29 Aug 1768.