Duchy of Savoy
The Duchy of Savoy (Arpitan: Ducât de Savouè; Piedmontese: Ducà 'd Savòja; Italian: Ducato di Savoia) was a territorial entity of the Savoyard state that existed from 1416 until 1847 and was a possession of the House of Savoy. It was created when Sigismund, Holy Roman Emperor, raised the County of Savoy into a duchy for Amadeus VIII. The duchy was an Imperial fief, subject of the Holy Roman Empire, until 1792, with a vote in the Imperial Diet.