remained closed to him, and he eventually returned to York in 1855, leaving a curate in charge at Sheffield. In the spring of 1858 he made a temporary removal to London, engaging himself for two years as preacher at St. Philip's, Regent Street. In 1860, on the accession of Charles Thomas Longley to the archbishopric of York, the powers of the northern convocation were restored, after they had long lain dormant. This revival was largely due to Trevor's strenuous efforts. In 1847 he had been returned proctor for the chapter of York, and had moved to elect a prolocutor, with a view to proceeding to business. Convocation was, however, according to custom, immediately adjourned, and nothing further was done towards re-establishing its active functions during the life of the archbishop, Thomas Musgrave. In 1852 Trevor published The Convocations of the two Provinces, their origin, constitution, and forms of proceeding, a work which had considerable influence on clerical opinion, and in the same year he was returned proctor for the archdeaconry of York. On the union of the two houses of convocation, after the accession of William Thomson in 1862, Trevor was appointed synodal secretary, and in that capacity greatly extended the representative character of convocation. In 1868, quitting York, he retired to the living of Burton Pidsea in Holderness, and in 1871 he was translated by the archbishop to the rectory of Beeford with Lisset and Dunnington. In 1874 he received by diploma from Trinity College the degree of D.D., in recognition of his great work, The Catholic Doctrine of the Holy Eucharist. A new enlarged edition appeared in 1875, with an appendix of authorities in the original Greek and Latin, bearing a dedication to Walter Farquhar Hook, dean of Chichester, to whose school of thought Trevor belonged. In this treatise he vindicated the Anglican doctrine of the eucharist against the Roman, Lutheran, and Zwinglian conceptions. It was considered by Hook the standard work on the subject. In 1880 Trevor received the honorary degree of M.A. from the university of Durham, and in 1886 that of D.D. He died on 18 June 1888 in the rectory of his son, George Wilberforce Trevor, at Marton, near Middlesbrough, in Yorkshire, and was buried at Beeford. A memorial tablet was erected to his memory in the north aisle of the choir of York minster. On 12 July 1836 he married Elizabeth, daughter of