Dominic Collins was an Irish Jesuit lay brother and former military captain who lived from 1566 to 1602. Born into a prominent merchant family in Youghal, he initially served as a soldier in the French Wars of Religion, where he rose to the rank of captain. Later in life, he joined the Society of Jesus, entering the novitiate in Santiago de Compostela. He returned to Ireland during the Nine Years' War to support Irish forces, eventually facing martyrdom for his Catholic faith.