The Mansel Baronetcy of Muddlescombe, in the County of Carmarthen, was created in the Baronetage of England on 14 January 1622 for Sir Francis Mansel, younger brother of Sir Thomas Mansell, 1st Baronet of Margam.[3] Sir William Mansel, 9th Baronet sat as Member of Parliament for Carmarthenshire.[4] There was great confusion over the succession after the death of Sir John Bell William Mansel, 11th Baronet in 1883. The rightful heir was believed to be Edward Berkeley Philipps (later Mansel), son of Courtenay Philipps, son of Richard Mansel, younger brother of the tenth Baronet. However, it was widely believed that Courtenay Philipps's first marriage was invalid. The title was therefore assumed by Edward Berkeley Philipps's brother Richard Philipps (later Mansel) as the twelfth Baronet. On his death in 1892 the title was assumed by his son Courtenay Cecil Mansel, the thirteenth Baronet. However, in 1903 the latter discovered evidence that his grandfather's first marriage was indeed valid and relinquished the use of the title in favour of his uncle Edward Berkeley Philipps (later Mansel), who became the twelfth Baronet. When he died childless in 1908 the title was resumed by his nephew Courtenay Cecil Mansel, the thirteenth Baronet.[5] Sir Courtenay Cecil Mansel later represented Penryn and Falmouth in the House of Commons.[5] The Mansel Baronetcy of Muddlescombe is the only extant Mansel baronetcy as of the present day, with Sir Philip Mansel, 15th baronet (born 1943) having succeeded to the baronetcy on the death of his father, Sir John Philip Ferdinand Mansel, 14th baronet in 1947.
The Mansel Baronetcy of Trimsaran, in the County of Carmarthen, was created in the Baronetage of England on 22 February 1697 for Sir Edward Mansel, great-grandson of Sir Francis Mansel, 1st Baronet of Muddlescombe.[6] The title became extinct on the death of the fourth baronet Sir Edward Joseph Shewen Mansel in 1798.
Thomas Mansel, 1st Baron Mansel was succeeded by his grandson Thomas Mansel, son of Hon. Robert Mansel.[8] Thomas Mansel, 2nd Baron Mansel died unmarried on 29 January 1744 and the title passed to Christopher Mansel, son of the first Baron, who also died unmarried.[9] Bussy Mansel, third son of the first Baron, thus inherited the title.[9]
In 1622, John Maunsell, Esq., of Chicheley, Buckinghamshire, a barrister, purchased from Lord Holland the rectory, manor, and estate of Thorpe Malsor, about two miles west from Kettering, Northamptonshire, in Rothwell Hundred.[12][13] From that time, the main stock of the family continued to reside at Thorpe Malsor in affluence and distinction.[14][15] John Maunsell died on 19 October 1625.[13] He had two sons with Katherine Ward, daughter of Sir Richard Ward of Hurst.[13]