Denny, who came from an old English family, was descended from the Elizabethan adventurer Sir Edward Denny (d. 1600), Member for Liskeard, 1584, Westmorland, 1593, and Tregony, 1597, who was awarded the forfeited Desmond estates in and around Tralee. The Irish line of Dennys, several of whom sat in the Dublin Parliament, established in the eighteenth century a strong electoral interest in county Kerry and, by its end, a stranglehold over the corporation borough of Tralee.
In 1795, Sir Edward, who was luckier in his choice of legal adviser, married ‘Betsy’, the only child of the respected barrister Robert Day, Member for Tuam, 1783-90, and Ardfert, 1797-8, who three years later became a judge.
Day, who had influence in county Kerry politics, suggested bringing forward Denny in conjunction with his ward the knight of Kerry before the general election of 1806. This idea was initially supported by one resident magnate, Lord Glandore, who had fallen out with his relative James Crosbie, the other sitting Member, but, another key patron, Lord Kenmare, preferred a different local gentleman, Henry Arthur Herbert, who, although Denny briefly entered, was returned unopposed with the knight. Nothing came of Day’s scheme of canvassing for Denny’s eldest son and namesake for the county in 1816, but at the general election two years later he was brought in as a stopgap for Tralee. He made no mark in the House, where he voted for Catholic relief, 3 May 1819, and he vacated in favour of a paying guest, James Cuffe, later that month.
On the death of Cuffe, Denny, who was bitterly attacked by O’Connell as an anti-Catholic boroughmonger, was returned for Tralee in September 1828 at a by-election in which the independents were refused permission to have Nicholas Philpot Leader* put in nomination.
Smith was again returned at the following general election, when the inhabitants met to condemn the influence of Denny and his family, and, having been appointed to office in the Grey administration, in November 1830, when Denny was described by Lord Lansdowne, who feared Smith might be disturbed, as ‘a great rogue’.
