Complex sentence: Later, Vincentians from Italy also came to help in the administration of the seminary, bringing with them sacred relics and a vial containing the blood of a Roman saint and martyr, St. Constantius.
Split into simpler sentences: Later, Vincentians from Italy also came to help in the administration of the seminary. These priests who came from Italy, brought with them the sacred relics and a vial containing the blood of a Roman saint and martyr, St. Constantius.