Fitzroy, whose military and political careers and private life were blighted by his compulsive gambling habit, had served with distinction on the Walcheren expedition, in the Peninsula and at Waterloo. He was with the army of occupation in France when he and his elder brother Lord Euston were brought into Parliament in 1818 as the duke of Grafton’s family Members for Thetford and Bury St. Edmunds.
He voted for Catholic relief, 6 Mar. 1827, 12 May 1828, to disfranchise Penryn, 28 May 1827, and to repeal the Test Acts, 26 Feb. 1828, and presented Thetford’s petition for repeal of the Malt Act, 29 Feb. 1828. He repeatedly complained that their agreement of 5 June 1827 whereby Grafton underwrote his debts provided he assigned his entire income to him and his father-in-law, the Whig Member for Derbyshire, made parliamentary life unaffordable;
Fitzroy welcomed the appointment of Lord Grey’s ministry and their reform bill. He wrote to the postmaster-general, the duke of Richmond, 5 May 1831, ‘It is as well that the peers should have a certain majority for the bill dinned into their ears, that they may get used to the sound before reality comes before them’.
