A nephew of Thomas Pakenham, 2nd earl of Longford, Pakenham was one of nine children and belonged to a celebrated military family. His father had distinguished himself in the Peninsula campaign and was made an aide-de-camp to the king in 1825. A brother-in-law of the 1st duke of Wellington, he sat for Westmeath on his brother’s interest, 1808-26, but lost his seat after becoming a convert to Catholic relief.
On his father’s sudden death in March 1850, Pakenham inherited a large estate in county Antrim.
Pakenham does not appear to have sat on any select committees or brought forward any bills. A silent member, he attended the Commons intermittently, participating in 50 of 257 divisions in the 1852-53 session.
After voting in just one division of the 1854 session, (against the second reading of the Kingston-upon-Thames improvement bill, 16 Feb.), Pakenham responded to his ‘his country’s call’, and became one of nine Irish Conservative MPs to fight in the Crimean War.
