Faliero was the 55th Doge of Venice, a man who was, at least for a time, well respected. But his legacy is that he was the only doge decapitated for treason.
Research:

Behind the Scenes Minis: Art and Theme Parks
21:25

Interview: Leslie Iwerks
39:57

Uffizi: A Painting, A Bombing, A Restoration
37:36