Ferrara:

a dukedom in north Italy费拉拉，在意大利北部，过去为一公国。
△H.VIII.3.2.322 (321):“to conclude,/Without the King’s will or the state’s allowance,/ Aleague between his Highness and Ferrara.”未得国王的御旨或政府的批准，就缔结了国王陛下与费拉拉公爵之间的联盟。