Their Kingdom ended with the referendum by which Italians chose the republic as the form of state - see also birth of the Italian Republic. Under the Constitution of the Italian Republic, male descendants of the House of Savoy were forbidden from entering Italy. This provision was removed in 2002.
The house descended from Humbert I, Count of Sabaudia (or "Maurienne") (Italian Umberto I "Biancamano"), (1003-1047 or 1048), and includes the Counts of Savoy, the Dukes of Savoy, the Kings of Sardinia, and the Kings of Italy. Piedmont was later joined with Sabaudia, and the name evolved into "Savoy" (Italian "Savoia").
Savoy is a region of Europe traditionally part of north-western Italy, but largely absorbed into France in 1860 as part of the political agreement that brought about the unification of Italy.
The Savoy Hotel, the most famous being the one on the Strand, London on the site of the medieval Savoy Palace, the London residence of John of Gaunt, which was demolished by rioters in 1381.