Baron Arlington is a title in the Peerage of England which was created, on 14 March 1665, for Sir Henry Bennet,[1] younger brother of John Bennet, 1st Baron Ossulston. In 1672, he was made Earl of Arlington and Viscount Thetford, and was regranted the title of Baron Arlington, with a special remainder allowing it to pass to both male and female descendants, rather than only heirs male, as was customary with most peerages. Its territorial designation is the birthplace of its first holder Harlington, London, which was also known as Arlington.
The 11th Baroness Arlington was the last woman to take her seat in the House of Lords under the provisions of the Peerage Act 1963. She became a member of the Lords on 27 May 1999 and remained in the House until 11 November 1999, when the House of Lords Act 1999 took effect.
The first Earl of Arlington died, as anticipated, without male heirs so the titles went to his daughter Isabella. At age five, Isabella was engaged to Henry FitzRoy, the illegitimate son of Charles II of England and his mistress Barbara Villiers. Henry would be created Duke of Grafton in 1679.
Because Henry was an illegitimate son of King Charles II, he took the Norman-style surname Fitzroy, derived from the Norman French term for "son of the king". Upon the death of his parents, Henry FitzRoy inherited the Arlington and Grafton substantive titles.
The two titles continued united until the death of the 9th Duke in a high-speed racecar accident in 1936.
The Grafton dukedom passed to a cousin yet the three Arlington/Thetford titles fell into abeyance under the principle of moieties between his two sisters, neither of whom petitioned the Sovereign to terminate this. After the death of the elder sister, her eldest child Jennifer petitioned the Sovereign, and the abeyance of the barony of Arlington was terminated in her favour, restoring it upon her, rather than her aunt's descendants. The earldom of Arlington, however, remains abeyant, along with the viscountcy of Thetford.
De los títulos nobiliarios en el Reino Unido , el condado de Arlington y el vizcondado de Thetford son raros ejemplos de un título con un rango superior al de barón que cae en suspenso, siendo otro caso el del condado de Cromartie en 1893.
