sentences:  On May 30, 1831 Roosevelt married Cornelia Van Ness (1810–1876) in Paris, the daughter of Governor of Vermont and the Collector of the Port of New York Cornelius P. Van Ness and Rhoda (née Savage) Van Ness, and the niece of William P. Van Ness and John Peter Van Ness.The American Revolution war hero, the Marquis de Lafayette, was among their guests.Among Cornelia's siblings were Marcia Van Ness (wife of British diplomat William Gore Ouseley) and James Van Ness, the Mayor of San Francisco.