The House of Sforza was a prominent Italian noble family that ruled the Duchy of Milan from the 15th to the 16th centuries. Founded by Francesco Sforza, a condottiero, the family rose to power through military prowess and strategic marriages. They played a significant role in the politics of Northern Italy during the Renaissance. The Sforza family is known for its patronage of the arts and culture, supporting famous artists like Leonardo da Vinci and Donato Bramante. Their legacy includes the construction of notable architectural works, such as the Castello Sforzesco, which remains a symbol of Milan's history.