USS Conestoga was the planned name for the monitor USS Sangamon (1862) and the name was changed while the ship was still on the stocks. She served in the American Civil War and later served in the Spanish–American War as Jason.
USS Conestoga (AT-54), commissioned 10 November 1917, was lost at sea under unknown circumstances in 1921. The fate of the vessel was a mystery until the wreck was identified in 2016.[1][2]