 Garth was, however, captured before he could reach Savannah and Prévost remained to defend the town from a combined French and Continental force in an action that came to be known as the Siege of Savannah.Augustine was married to Anette (Ann) Grand and father of Sir George Prévost, and of Major Augustine Prevost (b.29 August 1744 Geneva – d. 17 January 1821 Greenville, NY).