| has gloss | eng: Viscount Dillon, of Costello-Gallen in the County of Mayo, is a title in the Peerage of Ireland. It was created in 1622 for Theobald Dillon, Lord President of Connaught. The Dillons were an Irish-Norman landlord family from the 1200s and a part of County Westmeath was called Dillons Country. His great-grandson, the seventh Viscount, was a supporter of the Catholic King James II of England and was outlawed after the Glorious Revolution. He founded Dillons Regiment of the Irish Brigade in the French Army, which was supported by the Wild Geese and achieved success at Fontenoy in 1745. |
