Upon his recovery he became a member of the Pontifical Commission to study the validity of the Anglican ordinations (1896) leading to Apostolicae curae, to which his historical contribution was major. In 1900, he became abbot president of the English Benedictines. He was President of the Pontifical Commission for Revision of the Vulgate, 1907. He also authored the major history of the Venerable English College at Rome.
