(November 30, 1993 - July 15, 2000) (his death) (4 children) Quilico was married to his first wife, pianist and vocal coach Lina Pizzolongo, from November 1949 until her death in September 1991. She was the mother of his son Gino Quilico and daughter Donna. Quilico married his second wife, concert pianist and Professor of Piano Performance and Musicology, author and artist Christina Petrowska Quilico, on November 30, 1993. With Christina, he gained two step-daughters. Louis Quilico died on July 15, 2000, in Toronto, Ontario.