post 1664 - 1704
Power, succ. 1693 his bros. Lord John). His Earldom of Tyrone & Viscountcy of Decies having become extinct, he was succ. in the Barony of Le Poer & Corroghmore (but for the 1641 attainter against his father Piers Power, + post/1641) by his 1st cousin-once-removed Lt. Col. John Power (+ 1725). Governor of the city of Waterford.Died without male issue.
- Family Archivists: see
Power formerly of Gurteen
- http://www.r-alston.co.uk/ch_ire.htm - "PORTLAW wat Curraghmore Power 1700+ Rebuilt by James Power, 3rd Earl of Tyrone. M. Bence-Jones, A Guide to Irish Country Houses, London, 1988. J.B. Burke, Visitation, 2nd Series, II, 1855, 64-6. Power family since medieval times. "