Willem was not shown living with mother in the 1703 census for New York City, perhaps he was serving an apprenticeship. The family moved to Tappan a few years after his mother remarried. Willem met his wife at Tappan. He inherited six children from Leuntie’s previous marriage to Konrad Harte. He is shown as a member of the Reformed Dutch Church at Tappan on 17 apr 1729. Last mention of Willem in records was 14 Oct 1733 at the baptism of his step-daughter’s child.

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William De Grauw, born in New York City and living in Tappan
Leuntje Magielse, living in Tappan, widow of Koenraet Harte
February 12, 1718 (or 1715?)