He emigrated to France as a young man along with his brothers John and William and joined the Irish Brigade of the French army as a volunteer captain. It was in France that he met the Jacobite Prince Charles Edward (Bonnie Prince Charlie).
A young man from Ireland emigrated to France along with his brothers John and William and joined the French army's Irish Brigade as a volunteer officer. In France, it was during this time that he met the famous Jacobite leader Charles Edward, also known as Bonnie Prince Charlie.