Background
Mansel was the son of Sir Edward Mansel, 4th Baronet, of Margam Abbey, Glamorgan, Wales, sometime Member of Parliament for Glamorganshire, by his wife Martha Carne.
Mansel was the son of Sir Edward Mansel, 4th Baronet, of Margam Abbey, Glamorgan, Wales, sometime Member of Parliament for Glamorganshire, by his wife Martha Carne.
He was educated at Jesus College, Oxford, and graduated with a Bachelor of Arts in 1686 and by 1699 he was awarded his Master of Arts.
Mansel"s great-grandfather was Henry Montagu, 1st Earl of Manchester. In 1701 he held the office of High Sheriff of Glamorgan. On the 17 November 1706, upon the death of his father Edward, Mansel was made 5th Baronet Mansel of Margam, and on 1 January 1712, he became 1st Baron Mansel of Margam, allowing him to take a seat in the House of Lords.
In 1704 he was given the post of Vice-Admiral of South Wales and the same year he was appointed Comptroller of the Household to Queen Anne, a position he held until 1708.
Whilst Comptroller of the Household, Mansel was invested as a Privy Council. From 1710 to 1711 he was a Commissioner of the Treasury, and from 1712 to 1714, now Baron Mansel, he was Teller of the Exchequer.
1st Parliament of Great Britain. 2nd Parliament of Great Britain. 3rd Parliament of Great Britain.