As of 2007 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 Conservative politician Sir Charles Edward Ponsonby, 1st Baronet, was the son of Hon. Edwin Charles William Ponsonby, fifth son of the second Baron de Mauley.
The Heir Presumptive is the present holder's brother Hon. Ashley George Ponsonby (b. 1959)