Gloucester is one of the few cities in England with two coats of arms. The first consists of three chevrons surrounded by ten roundels. The chevrons come from the arms of the Clare family, who were earls of Gloucester from the 12th to the 14th centuries, while the roundels come from the arms of the Bishop of Worcester, whose bishopric historically encompassed Gloucester. This coat is the older of the two, though it is usually termed the "Commonwealth coat", as it was not officially granted to the city until 1652, during the Commonwealth period. The crest and supporters (lions bearing broadswords and trowels) were also adopted at this time, along with the motto "Fides Invicta Triumphat" ("unconquered faith triumphs", in reference to the royalist siege withstood by the city in 1643).