Originally the seat of the Bishop of Armagh, Carrigglas became the home of the Huguenot Lefroy family in 1837, remaining in their ownership until now. Thomas Lefroy, who commissioned Carrigglas, was a friend of the novelist Jane Austen. They were romantically involved for a time, and it is believed that she based the character of Mr. Darcy, hero of Pride and Prejudice on him.
Thomas Lefroy had an outstanding academic record at Trinity College, Dublin from 1790 to 1793. In 1793, his great-uncle Benjamin Langlois sponsored Tom's legal studies at Lincoln's Inn, London. Later, he became a prominent member of the Irish bar (having been called to it in 1797) and published a series of Law Reports on the cases of the Irish Court of Chancery. (Tom Lefroy’s house in Longford, Ireland), the Lefroy family came from the town of Cambrai in North Western corner of France. They were a Huguenot family, and one of their heads of the family, the Lord L'Offroy, died at the Battle of Agincourt in 1415.
http://www.carrigglas.ie/
http://en.wikipedia.org/wiki/Thomas_Langlois_Lefroy