Graham Douglas Leonard (8 May 1921 – 6 January 2010) was an English Roman Catholic priest and former Anglican bishop. His principal ministry was as a bishop of the Church of England but, after his retirement as the Bishop of London, he became a Roman Catholic, becoming the most senior Anglican cleric to do so since the English Reformation. He was conditionally ordained to the priesthood in the Roman Catholic Church and was later appointed a monsignor by Pope John Paul II. Early life Born on 8 May 1921, Leonard was the son of Douglas Leonard, an Anglican priest, and his wife Emily Leonard (née Cheshire). He was educated at Monkton Combe School near Bath and at Balliol College, Oxford. During the Second World War he was commissioned into the Oxfordshire and Buckinghamshire Light Infantry, rising to the rank of captain. He spent the latter part of the war attached to the Army Operational Research Group for the Ministry of Supply. He then attended Westcott House theological college in Cambridge. He was ordained as a deacon in 1947 and as a priest the following year. Early ministry Leonard was a curate in St Ives, Huntingdonshire, and at Stansted, Essex. He then spent three years as vicar of Ardleigh, Essex. In 1957 he became a residentiary canon of St Albans Cathedral and the diocesan director of religious education. His long association with the Diocese of London began in 1962 when, before becoming the Bishop of Willesden (a suffragan bishopric in the diocese) in 1964, he was appointed as Archdeacon of Hampstead and as rector of St Andrew Undershaft with St Mary Axe in the City of London. Episcopal ministry Leonard had three episcopal positions in the Church of England, firstly as the suffragan Bishop of Willesden in the Diocese of London and later as the diocesan Bishop of Truro (1973 to 1981) and the Bishop of London (1981 to 1991). During this last period he was also Dean of the Chapel Royal, a Royal Household office, for which he was appointed Knight Commander of the Royal Victorian Order (KCVO). He was also Prelate of the Order of the British Empire. As the Bishop of London, Leonard was admired for his pastoral concern for female staff at Church House and had a considerable number of female workers in parishes in his diocese. He was notable for ordaining 71 women as deacons at