 After the death of his mother, his father remarried, on July 14, 1774, to Elenora Gibson, widow of Mr. Thompson.His paternal grandfather was Johannes Roosevelt (1689–1750), a son of Nicholas Roosevelt (1658–1742), himself a son of Dutch immigrant Claes Maartenszen Van Rosenvelt (d. 1659), who established the Roosevelt family in America.Through his brother, James Jacobus Roosevelt (1759–1840), he was the uncle of James John Roosevelt (1795–1875) and Cornelius Van Schaack Roosevelt, Sr. (1794–1871), progenitor of the Oyster Bay Roosevelts, and through him, a great-grand uncle of President Theodore Roosevelt.