Sylvester Stallone's son dead at 36 Pictures Sage Stallone attends the world premiere of the film "Daylight," on Dec. 5, 1996, in Hollywood, Calif. He co-stars in the film with his father, actor Sylvester Stallonee. A publicist for Sylvester Stallone says the actor's son, Sage Stallone has died on July 13, 2012, at age 36.