Daniel Horsmanden (June 4, 1691 – September 28, 1778) was a chief justice of the supreme court in the Province of New York and member of the governor's executive council.

Horsmanden read law, but lost his inheritance to financial speculation in the South Sea bubble which necessitated his voyage to the colonies to seek new opportunities.

[1] Mary's father had spent time in Virginia as a Cavalier fleeing Cromwell, and her former husband Samuel Filmer (third son of Tory author Robert Filmer) descended from the sister of Samuel Argall, governor of Virginia.

In 1766, he was one of the judges in the Prendergast case where he convicted and sentenced to death the supposed leader of the Dutchess land rebels.

[5] In 1776, along with Oliver De Lancey and about one thousand other residents of the city and county of New York, he signed an address to Lord Howe.