Enzo Colombini  Enzo Colombini (born 1958) has served as Captain-Regent of San Marino twice. He first served alongside Severiano Tura from April 1, 1985 to October 1, 1985, then alongside Gian Franco Terenzi from October 1, 2000 to April 1, 2001. He has belonged to the Sammarinese Communist Party and Sammarinese Democratic Progressive Party.