Costanzo I of Sforza was an Italian condottiero, lord of Pesaro and Gradara.
He was the son of Alessandro Sforza, under whom he fought in his early years and from whom he inherited the lordship of Pesaro. He also received the lordship of Gradara... Wikipedia
Born: July 5, 1447
Died: July 19, 1483 (age 36 years), Pesaro, Italy
Children: Giovanni Sforza and Galeazzo Sforza
Parents: Alessandro Sforza and Costanza Varano
Partner: Camilla d'Aragona
Grandchildren: Costanzo II Sforza and Isabella Sforza