Fitzgerald was born at Clonmel, county Tipperary, one of 12 children of a wealthy Catholic landholder with estates in counties Cork and Tipperary into a junior branch of the Leinster family, his father being a descendant of the 5th earl of Kildare.
A founder and committee member of the ’82 Club, a society dedicated to the commemoration of Ireland’s ‘patriot parliament’, Fitzgerald’s long attachment to the ‘popular cause’ and ‘high place on the list of Repeal Arbitrators’ secured his selection as a candidate for Tipperary, following the death of the sitting Liberal, Robert Otway Cave in 1845. Though he was neither resident in the county, nor personally ambitious, Fitzgerald enjoyed O’Connell’s backing and was duly returned unopposed as a repealer, 21 Feb. 1845.
Fitzgerald first spoke in the House on famine relief, advocating greater Irish participation in the consideration of government policy to meet the crisis. A supporter of free trade, he endorsed Peel’s plan to remit duties on corn, expressing admiration for the prime minister’s ‘moral courage’ in advancing the measure and dividing in favour of repeal, 27 Mar. 1846.
Although initially inclined to support the new Whig ministry that took office in 1846, Fitzgerald expressed disappointment with its proposals to deal with destitution in Ireland, and argued for a diversion of labour from public works to the cultivation of crops. In defending the efforts made by resident landlords to provide relief in February 1847, he condemned the ‘evil of absenteeism’ which, he claimed, annually drained the country of £4,000,000 in rents.
Fitzgerald remained faithful to O’Connell after the repeal movement divided in 1847.
