The 1890 Veterans Census lists William W. Fletcher as Capt, US Ride(?) Rover, deceased, widow Mariah Fletcher of Independence, Jackson Co., MO. Service: 4 Dec 1862 - 18 Feb 1866

Capt. Fletcher, b. VA 1836, lived in Keokuk, Lee Co., IA in 1860, Married Mariah Sullivan and had 1 son, Herbert, b. MO in 1869.

Was the US Ride(?) Rover a ship? Capt. Fletcher is not lised on the Park Service website.