Archbishop George Stack was born in Cork, Ireland, on 9th May 1946. He was educated at St Aloysius Secondary School, Highgate, London, and studied for the priesthood at St Edmund’s College, Ware, from 1966 to 1972.
He was ordained a priest for the Archdiocese of Westminster on 21st May 1972. Until 1975 he served as assistant priest at Our lady & St Joseph, Hanwell. From 1972 he also served as chaplain to St Bernard’s Hospital, Southall (until 1975) and chaplain to Cardinal Wiseman School, Greenford (until 1976).
From 1974 to 1977 Archbishop George undertook further studies at St Mary’s College, Strawberry Hill, and gained a Bachelor of Education degree. He then became a member of Westminster Religious Education Centre. In 1977 he was appointed assistant priest at St Paul the Apostle, Wood Green, and in 1983, parish priest at Our Lady Help of Christians, Kentish Town. In 1990, he was appointed Vicar General for Clergy in the Westminster Diocese. He became Administrator of Westminster Cathedral in 1993.
On 12th April 2001 he was ordained an Auxiliary Archbishop for the Diocese of Westminster. He was Chairman of the Diocesan Department for Education and Formation and had pastoral responsibility for the Deaneries in Hertfordshire.
In addition to his Diocesan responsibilities the Archbishop served as Chair of Governors at St Mary’s University College, Twickenham; a Governor at Heythrop College in the University of London and as member of the board of St John & St Elizabeth’s Hospital, London.