Thomas Adamson STL (30 September 1901–21 April 1991), a 20th-century Roman Catholic priest, served as domestic prelate to Pope Pius XII then as a canon residentiary of Liverpool Metropolitan Cathedral,[1] before becoming archdiocesan vicar general.

Born in 1901 at Alston Lane near Preston, the eldest son of George Adamson (1877–1952) and his wife Teresa (d. 1939), daughter of Thomas Higginson, his patrilineal ancestors were Lancashire recusants.

[2][3] Among his three uncles who entered holy orders was the Revd James Adamson, vice-president of Ushaw College,[4] while a collateral ancestor, Dom Richard, a monk at Holm Cultram Abbey after the Dissolution of the Monasteries, became vicar of Bexley, Kent.

Ordained a priest in the Church of Rome in 1926, Adamson went up to Beda College when Mgr Charles Duchemin was rector,[6] and upon his return to Britain served from 1928 until 1945 as Private Secretary to the Most Revd Richard Downey, Archbishop of Liverpool.

Thereafter, Adamson served as vicar general of the Archdiocese of Liverpool from 1955 until 1965 and, in 1966, was appointed Protonotary Apostolic to Pope Paul VI and later a conventual chaplain of the Sovereign Military Order of Malta.