Willa, known as Willa of Tuscany (911/912–970), was a medieval noblewoman. By birth, she was a member of the Bosonid noble dynasty. By marriage to Berengar II of Italy she was Countess of Ivrea from 930 to 963, and queen consort of Italy from 950 to 963.
The House of Canossa was an Italian noble family from Lucca holding the castle of Canossa, from the early tenth to the early twelfth century.
Sigifred of Lucca built the castle at Canossa around 940. Adalbert Atto appears in Canossa in time to give refuge to Queen Adelaide when she was fleeing Berengar II and Willa in 955.