[1] He was Lord Mayor of Dublin from 1688 to 1689 and received James II on his arrival to the city in March 1689.
[2][3] He raised an infantry regiment at his own expense to serve in the Irish Army during the War of the Two Kings (1689–91), which was present at the Battle of the Boyne.
[4] Following the Jacobite defeat in Ireland, Creagh was attainted and fled to France and then to the Netherlands.
He converted from Roman Catholicism to the established Church of Ireland and became a broadsheet publisher.
Creagh failed in his attempt to regain his confiscated properties and had to be helped from the public funds in 1732, 1733, and 1734.