Lady Louisa was born on 3 April 1781 in Ireland, the daughter of Irish peer and politician Armar Lowry-Corry, 1st Earl Belmore and Lady Harriet Hobart, daughter of John Hobart, 2nd Earl of Buckinghamshire, Lord Lieutenant of Ireland. She had one half brother, Somerset Lowry-Corry, 2nd Earl Belmore by her father"s first marriage to Lady Margaret Butler. She most likely spent part of her early years at Castle Coole, County Fermanagh which her father had rebuilt in 1789.
She posed for artists including Sir Thomas Lawrence, and her bust was sculpted by Antonio Canova. Her parents" marriage was dissolved by an Acting of Parliament in 1793, and the following year her mother married William Kerr, 6th Marquess of Lothian and by him had four additional children. Afterwards, she retired to a mansion in the Rue de Tivoli.
She was compelled to return to England following the Revolutions of 1848 which engulfed France and the rest of continental Europe.
She is referred to in a letter written by Thomas Carlyle to his mother on 3 September 1848, in which he describes her as having been: "brisk-talking, friendly and an entertaining character". He goes on to say that she "has been beautiful" at one time.
With "plenty of money, fair health, but nothing to do". Louisa died on 19 April 1862 at the age of 81, and was buried in Bronwell.
A bust of Lady Louisa was made by renowned Venetian sculptor Antonio Canova.
She was also the subject of at least three portraits. One was an allegorical portrait painted by Sir Thomas Lawrence in which she is represented as Hope. lieutenant is displayed at the Louisiana Salle University Art Museum.
