New York (N.Y.). Dept. of Parks and Recreation.

The Wyckoff family was a prominent Brooklyn family descended from Pieter Claesen Wyckoff, one of the most influential leaders during 17th-century settlement in New Amsterdam. Claesen-Wyckoff and his wife, Greitje van Ness, eventually settled in Flatlands, Brooklyn, in what is now the historic Wyckoff Homestead. Claesen-Wyckoff and his wife had a total of eleven children, who married into several different families, creating a vast and complex genealogy spanning the entire country.

From the guide to the Wyckoff House collection, 1973, (Brooklyn Historical Society)