Pietro was the son of Celeste Alesandrini and Teresa Gaetana Colista. The date and place of his birth have not been found.
Pietro Alesandrini
Celeste Alesandrini (c1907-?)
Teresa Gaetana Colista (1907-1969)
Franco Colista (1858-c1936)
Berardino Colista (1818-1898)
Angela Maria Fiocca (1815-1874)
Anna Bernardina DiMichele (1869-1959)
Antonio DiMichele (1839-?)
Anna Teresa Pettorelli (1838-?)