The Spanish governors of Sardinia were initially loyal to the Bourbons, and a pro-Habsburg revolt was suppressed. In 1708, with the help of Britain's Mediterranean Fleet, the island was conquered for the Habsburgs. At the end of the war, a series of treaties—Utrecht (1713), Rastatt (1714) and Baden (1714)—transferred the Spanish-held kingdoms of Sardinia and Naples to the Habsburg emperor, now Charles VI. Although Charles believed he should also receive the Kingdom of Sicily, which had been in union with Naples since 1504, this was instead given to the House of Savoy. Neither house possessed their island kingdom for long: Spain re-conquered Sardinia in 1717 and Sicily the next year. By the Treaty of the Hague (1720), Spain and the Empire recognised the re-allotment of Sicily to the Habsburgs and Sardinia to Savoy.