Power was the second son of Nicholas Power, a prominent landowner in counties Tipperary and Waterford; his mother was the daughter of a prominent local banker in the firm of Hayden and Rivers. Having inherited an estate at Ballinakill, Co. Waterford, he married the heiress of a wealthy Dublin woollen merchant and purchased the ‘beautiful and picturesque’ Faithlegg House in 1819.
Power was active in local politics and in 1820 chaired a meeting of Waterford Catholics to consider petitioning the legislature for Emancipation. He was present, along with his older brother Patrick (MP County Waterford 1835), on the platform with Henry Villiers Stuart for his election victory in 1826, having played a role in brokering the foregoing electoral pact.
Although Power was ‘not a Conciliation-hall Repealer’ (i.e. one endorsed by the O’Connellites), he was prevailed upon by local repealers to stand against the sitting Liberal member, William Villiers Stuart, at the 1847 general election for County Waterford. When Villiers Stuart unexpectedly withdrew, Power was returned unopposed.
Power supported the Irish franchise bill in May 1850, but was absent for the vote of confidence in ministers over the Don Pacifico affair that June. Thereafter, he was a moderate supporter of cautious Liberal reforms until, in February 1851, he was affronted by Russell’s ecclesiastical titles bill. He duly voted with the ‘Irish Brigade’, those Irish Liberals who actively opposed the ministry’s ‘no popery’ policy, to defeat the agricultural distress bill, which precipitated Russell’s resignation.
Power headed the poll for County Waterford at the 1852 general election. Though one parliamentary guide labelled him as a ‘Liberal of the Irish (Roman Catholic) party’, his support for the Independent Irish party was uncertain.
Power retired into private life and was legally separated from his wife in 1860. He remained a generous benefactor to the Catholic Church, building churches at Faithless and Crook and the Lady Lane Convent Orphanage. He later donated £2,000 to the Sisters of Charity in Waterford for the construction of a chapel and school, and made donations of £500 to the Christian Brothers and the Little Sisters of the Poor.
