Complex sentence: Savoldi was born severely premature in Castano Primo (Italy) and he spent his childhood in Castano Primo and Bergamo (Milan, Italy), being raised by his grandmother and an aunt.
Split into simpler sentences: Savoldi was born severely premature in Castano Primo (Italy). He spent his childhood in Castano Primo and Bergamo (Milan, Italy), being raised by his grandmother and an aunt.