Why is William of Perth a saint?

William of Perth is considered a saint because of his life of piety and service, particularly his dedication to helping the poor and his commitment to his faith. He was a Scottish nobleman who became known for his charitable acts, especially his efforts to aid the needy and support the Church. His martyrdom, as he was killed while on a pilgrimage to Jerusalem, further contributed to his veneration as a saint. His feast day is celebrated on June 23rd, reflecting his enduring legacy in Christian tradition.