Saint William of Vercelli was an Italian monk and the founder of the Benedictine order known as the Williamites. Born in 1085 in Vercelli, Italy, he dedicated his life to monasticism and spiritual growth. He is known for his ascetic lifestyle and commitment to prayer, which attracted many followers. William established several monasteries, promoting a strict adherence to the Rule of Saint Benedict. He is celebrated for his efforts in reforming monastic life during the 12th century. His feast day is observed on June 25, honoring his contributions to the Christian faith and monastic tradition.