Thomas St. Leger was an English bishop known for his role in the Church of England during the 16th century. He served as the Bishop of Carlisle from 1557 until his death in 1570. St. Leger was recognized for his efforts in promoting the Protestant Reformation within his diocese. In addition to his ecclesiastical duties, St. Leger was involved in various administrative tasks, including the oversight of church properties and the implementation of religious reforms. His tenure was marked by the challenges of maintaining order and unity within the church during a time of significant religious change in England.