Dr. Doran, "Their Majesties' Servants." Annals of the English Stage…
“ At that time the direct ancestor of our lucky actor was a member of that ancient family of those O'Briens, who generally contrived to take opposite sides in every quarrel. William O'Brien's grandfather was faithful to the cause of James II., and on the capitulation of Limerick, made his way to France, where he served in the Irish brigade, under O'Brien, Viscount Clare. That brigade, many of whose members "took to the road" in France, in order to support themselves, turned out first-rate fencing-masters, who lived by teaching. ”
