Italian abstract sculptor Umberto Mastroianni died on 23 February 1998 in Marino at age 88. He began his career sculpting nudes and portraits but abandoned figurative sculpture for abstraction in 1940. In the 1970s he turned his attention to painting but remained best known for his large-scale sculpture in stone and metal. Mastroianni was the first to receive a Praemium Imperiale for sculpture in 1989.
Reference: Daniela De Dominicis. “Mastroianni, Umberto.” Grove Art Online. Oxford Art Online. Oxford University Press.