Guido Mannari: Guido Mannari. Actor: Caligula. Guido Mannari was born on 13 December 1944 in Rosignano Marittimo, Tuscany, Italy. He was an actor, known for Caligula (1979), The Decameron (1971) and Il medium (1980). He died on 10 August 1988 in Rosignano Marittimo, Tuscany, Italy.