"Fanny Power", also known as "Fanny Poer", "Fannuidh Power", "Madame Trench", "Mrs. Trench (of Garbally)”, "Planxty Fanny Powers" is an Irish air or planxty in 6/8 or 3/4 time and G Major (Complete Collection, O Canainn, O'Neill, Sullivan, Vallely), D Major (Bunting, Haverty), C Major (Thompson) or A Major (O'Sullivan/Bunting). The parts are played AB (Vallely) or AABB (most versions). It was composed by Turlough O'Carolan before 1728 in praise of Frances, the daughter and heiress of patrons David and Elizabeth Power of Coorheen, Loughrea, Co. Galway. O'Carolan called her "the Swan of the Shore" from the fact that her father's residence was situated on the edge of Lough Riadh. When Fanny married Richard Trench of Garbally in March, 1732, she became the "Mrs. Trench (of Garbally)" or "Madame Trench" by which title the air sometimes appears (although the song was probably composed prior to the union, as in the second verse Carolan says he hopes that he’ll live to dance at her wedding). She was long-lived, surviving to 1793, the mother of a future Lady (Clancarty) and a Baron, Viscount and Earl (William Power Keating Trench, born in 1741 and created Baron Kilconnel in 1797). It was printed in Bunting's Ancient Music of Ireland (1840), Complete Collection of Carolan's Irish Tunes (1984), P.M. Haverty's One Hundred Irish Airs, vol. 1 (1858), Heymann's Legacy of the 1792 Belfast Harp Festival (1992), S. Johnson's Kitchen Musician No. 3: Carolan (1983) (revised 1991, 2001), Matthiesen's The Waltz Book (1992), Mulholland's Ancient Irish Airs (1810) (as "Miss Power"), Ó Canainn's Traditional Slow Airs of Ireland (1995), Krassen's O'Neill's Music of Ireland (1976), O'Neill's Music of Ireland: 1850 Melodies (1903), O’Sullivan's Carolan: The Life, Times and Music of an Irish Harper (1958), Sullivan's Session Tunes, vol. 2, Samuel, Anne & Peter Thompson's The Hibernian Muse (1787)(as "Mrs. Trench"), Tubridy's Irish Traditional Music, vol. 2 (1999) and Vallely's Learn to Play the Fiddle with Armagh Pipers Club. It was recorded by Glasnotes on Live from Contrafornia, Patrick Ball on Music of Turlough O'Carolan, Walt Michael on The Good Old Way (1985), John McCutcheon on Barefoot Boy with Boots On (1981), James Galway and the Chieftains on James Galway and the Chieftains in Ireland (1986) and Derek Bell on Carolan's Receipt (1987).