The four Italian saints referenced in the crossword solutions are Neri (4 letters), CATHERINE (9 letters), Rocco (5 letters), and Stefano (7 letters). Saint Philip Neri was an Italian priest who founded the Congregation of the Oratory, a religious order dedicated to providing spiritual guidance. Saint CATHERINE of Siena was a 14th century mystic and theologian who is one of the two patron saints of Italy. Saint Rocco was a 15th century pilgrim who is known for his charity and care for the sick. Saint Stefano is the patron saint of Venice and is known for his miracles and devotion to the poor.