The House of Savoy (Italian: Casa Savoia) was a royal dynasty that was established in 1003 in the historical Savoy region. Through gradual expansion, the family grew in power from ruling a small Alpine county north-west of Italy to absolute rule of the Kingdom of Sicily from 1713 to 1720, when they were handed the island of Sardinia, over which they would exercise direct rule from then onward.
https://en.wikipedia.org/wiki/House_of_Savoy
サヴォイア家
イタリアのピエモンテとフランス及びフランス語圏スイスにまたがるサヴォワ一帯を支配していた辺境伯貴族であった家系
1713年、スペイン継承戦争の結果シチリア王国の王位を獲得、1720年にハプスブルク家とシチリア島、サルデーニャ島の交換を行い、サルデーニャ王国の王位を代わりに得た
https://ja.wikipedia.org/wiki/%E3%82%B5%E3%83%B4%E3%82%A9%E3%82%A4%E3%82%A2%E5%AE%B6