sentences:  His paternal grandparents were merchant and politician Isaac Roosevelt (1726–1794), a New York State Assemblyman and the New York State Constitutional Convention, and Cornelia Hoffman.He was the 3x-great-grandson of the first Roosevelt in America, Claes Maartenszen Van Rosenvelt (d. 1659).In 1825, he married Mary Rebecca Aspinwall (1809–1886), daughter of John Aspinwall (1779–1847) and Susan Howland (1779–1852).