Osmund was an 11th-century Norman nobleman and clergyman who served as the Lord Chancellor and the second bishop of Salisbury. Born in Sées, he accompanied William the Conqueror to England and played a significant role in the administration of the realm, including assisting with the compilation of the Domesday Book. As a bishop, he was instrumental in establishing the cathedral at Old Sarum and organizing its liturgical life. He is recognized as a saint in both the Catholic and Anglican traditions.