In 1747 Thomas Brudenell, a younger son of the 3rd earl of Cardigan, succeeded his maternal uncle, the 3rd earl of Ailesbury, as 2nd Baron Bruce of Tottenham, and to his estates in Wiltshire, which centred on Tottenham Park, near Marlborough. An undistinguished courtier and ministerialist, he was created earl of Ailesbury in 1776. In 1814 he was succeeded as 2nd earl by his son Charles, an inactive but basically Pittite Member since 1796, who achieved his ambition of obtaining a marquessate in 1821. His eldest son, who was known in the family as George Frederick, was styled Lord Bruce until 1812, and Earl Bruce thereafter.
Bruce was an inactive Member and made no known speeches in the House. He visited Dieppe and Paris in late 1826 and early 1827, but was present to vote for Catholic relief, 6 Mar. 1827. During that session he was named as a defaulter three times, twice being briefly taken into custody by the serjeant-at-arms. He made another visit to France in the autumn.
Ailesbury having spent a fortune, traditionally put at £250,000, on the rebuilding of Tottenham House, Bruce was obliged to retrench after the establishment of a family trust in 1832.
