 He died in New York City, on November 15, 1883. and is buried in the churchyard of Church of St. James the Less in Philadelphia.Trenchard married Anne O'Connor Barclay, the daughter of Captain John Mortimer Barclay, U.S. Army, in December 1848.They had one child, a son named Edward Trenchard (1850–1922), who was a noted marine artist.