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Baron de Mauley, of Canford in the County of Dorset, is a title in the Peerage of the United Kingdom. It was created in 1838 for the Whig politician the Hon. William Ponsonby, who had earlier represented Poole, Knaresborough and Dorset in the House of Commons. He was the third son of the 3rd Earl of Bessborough, an Anglo-Irish peer, and the husband of Lady Barbara Ashley-Cooper, one of the co-heirs to the ancient barony by writ of Mauley (or Maulay), which superseded the feudal barony the caput of which was at Mulgrave Castle, Yorkshire,[1] which barony by writ had become extinct in 1415. His son, later the second Baron, sat as Member of Parliament for Poole and Dungarvon.

As of 2018, the title is held by the latter's great-great-grandson, the seventh Baron, who succeeded his uncle in 2002. He is one of the ninety elected hereditary peers that remain in the House of Lords after the passing of the House of Lords Act 1999, and sits as a Conservative. He was elected in 2005 and thereby became the first hereditary peer having succeeded to his title after the House of Lords Act of 1999, to have obtained an elective hereditary peers seat in the House of Lords. As a descendant of the third Earl of Bessborough, Lord de Mauley is also in remainder to the earldom of Bessborough and its subsidiary titles.

The Hon. Ashley Ponsonby, younger son of the first Baron, was a Liberal politician. Another member of this branch of the Ponsonby family was the Conservative politician Sir Charles Ponsonby, 1st Baronet. He was the son of the Hon. Edwin Charles William Ponsonby, fifth son of the second Baron de Mauley.

Former Air Vice Marshal John Ponsonby is the son of officer, diplomat and politician Myles Ponsonby, and a grandson of Victor Coope Ponsonby, the fourth son of the Hon. Edwin Charles William Ponsonby.


Barons de Mauley (1838)Edit

The heir presumptive is the present holder's brother, the Hon. (Ashley) George Ponsonby (born 1959).[2][a]
The heir presumptive's heir presumptive is Sir Charles Ashley Ponsonby, 3rd Baronet (born 1951), a great-grandson of Edwin Ponsonby, fifth son of the 2nd Baron de Mauley, and thus a third cousin of the present holder and his brother.[2]
The heir presumptive's heir presumptive's heir apparent is his son, Arthur Ashley Ponsonby (born 1984).[2]

Male-line family treeEdit

Line of successionEdit

See alsoEdit

Notes and referencesEdit


  1. ^ a b c The present holder's brother was allowed by a warrant of precedence from the Queen to use the style of Honourable, because their father would have held the peerage but for his predeceasing the previous holder.[3]


  1. ^ Sanders, Ian. English Baronies, Oxford, 1960, pp. 66–67, Barony of Mulgrave.
  2. ^ a b c PONSONBY – Earls of BESSBOROUGH
  3. ^ "No. 56937". The London Gazette. 16 May 2003. p. 6081.