A Hendrick Bradt was listed in the American Genealogical-Biographical Index (on Ancestry.com) with a birthdate of 1740, birthplace of New York, v. 17, p 413, as one of the name of persons for whom marriage licenses were issued by the secretary of the Province of NY previous to 1784. Published in Albany, 1860.

A Hendrick Bradt is also listed in “New York Military in the Revolution” as an enlisted man in the Albany County Militia, Third Regiment, along with John Bradt and Peter Bradt.