He is listed as being present at the siege of Limerick, the Raid on Newry in County Down, as well as the king’s defeat at the Battle of the Boyne.
Mac Curtain is listed as among those pardoned by William III and Mary II in 1690,[5] and appeared to temporarily hold onto his landholdings.
The English record does not specify if this pardon was requested, or just granted to the natives as means of reconciliation following the Williamite War.
Whatever the case may be, the peace is short lived, as Mac Curtain had left Ireland with the Jacobite Army of 19,000 Irishmen under the Earl of Lucan in 1691.
For this, Mac Curtain was placed under royal attaint in 1696[6] (the state confiscation of his property and civil liberties).