A wealthy Catholic merchant and West India proprietor, Fitzgerald had settled early in life in Demerara (later British Guiana), where he acquired considerable property.
Fitzgerald attended the great reform meeting at the Royal Exchange in Dublin in September 1831, and that month organised freeholder opposition to the return of Lord Clermont’s nephew at a by-election for Louth. A year later he was solicited by a large body of electors to come forward for the county as a second repealer after Sheil opted to stand for County Tipperary.
In supporting O’Connell’s amendment to the address, 8 Feb. 1833, Fitzgerald argued for the Irish to be put ‘on an equal footing with their fellow subjects’ with regard to the law.
An opponent of ‘an extravagant expenditure of public money’, Fitzgerald voted for Joseph Hume’s motion on military and naval sinecures, 14 Feb. 1833, and subsequently supported a reduction of the standing army and the disbandment of the yeomanry. Wishing to curtail the Irish church establishment ‘to the standard of national want’, he voted for the first reading of the Irish Church temporalities bill, 11 Mar. 1833.
On 27 May 1833, Fitzgerald addressed a meeting of upwards of 1,500 planters, merchants, and others connected with the West Indies at the City of London Tavern, where he railed against the ‘injustice’ of the ministry’s proposals for the abolition of slavery, arguing that it represented an attack ‘on every person owning property’.
On Fitzgerald’s return to Ireland from the continent after the recess, the Freeman’s Journal remarked that ‘no popular member of Parliament discharged his duties with more undeviating fidelity or more practical efficiency, throughout a tedious and fatiguing session, to the labours of which he applied himself with unrelaxing zeal’.
Fitzgerald died in harness in October 1834 and was succeeded by his eldest son, Thomas Christopher (1820-71), who died unmarried.
