William of Maleval was a 12th-century French hermit and abbot who was born in Poitiers. Known for his righteous conduct and deep piety, he founded the Hermits of Saint William, which served as an early branch of the Augustinian hermits. His life of asceticism led to his recognition as a saint within the Catholic and Anglican traditions. He passed away in Castiglione della Pescaia in 1157.