Viscount Dillon

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 a Hiberno-Norman landlord family from the 13th century in a part of County Westmeath called 'Dillon's 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 'Dillon's Regiment' of the Irish Brigade in the French Army, which was supported by the Wild Geese and achieved success at Fontenoy in 1745.

Viscountcy Dillon
Blazon Arms: Quarterly: 1st and 4th, Argent a Lion passant between three Crescents Gules (Dillon); 2nd and 3rd, Argent a Fess between three Crescents Sable (Lee). Crests: A Demi Lion Gules holding in its paws an Estoile Argent. Supporters: On either side an Angel proper vested Argent winged and crined Or each holding in the exterior hand a Branch of Palm also proper and having a Riband over the shoulder of the second.
Creation date	16 March 1622
Created by	King James VI and I
Peerage	Peerage of Ireland
First holder	Theobald Dillon, 1st Viscount Dillon
Present holder	Henry Benedict Charles Dillon, 22nd Viscount Dillon
Heir apparent	the Hon. Francis Charles Robert Dillon
Status	Extant
Motto	DUM SPIRO SPERO (While I breathe I hope)

Harold Dillon,
17th Viscount Dillon.

However, his son Henry, the eighth Viscount, managed to obtain a reversal of the outlawry in 1694 and later served as Lord Lieutenant of County Roscommon. His younger brother, Lieutenant-General Arthur Dillon, was given the French title of Count Dillon in 1711 and was also created "Viscount Dillon" and "Earl of Dillon" by James Francis Edward Stuart, the Jacobite claimant to the throne. His son Henry, the eleventh Viscount, was a Colonel in the French Army, but Dillon's Regiment was disbanded in 1793 due to the turmoils of the French Revolution. His son Charles, the twelfth Viscount, notably represented Westbury in Parliament and conformed to Anglicanism in 1767. His son Henry Augustus, the thirteenth Viscount, sat as a Member of Parliament for Harwich and County Mayo. His great-grandson, the nineteenth Viscount, was a Brigadier in the Army. As of 2014 the title is held by the latter's great-grandson, the twenty-second Viscount, who succeeded his father in 1982.