[1] Conn Mor O'Niell was in residence during 1483, and in 1559 Shane O'Neill burnt the castle to prevent use by English forces.

[1] In 1607, ninety-nine Irish chieftains and their followers, including Hugh O'Neill, set sail from Rathmullan, bound for the continent.

The land was sold to Thomas Knox, 1st Earl of Ranfurly who built a mansion house on the site.

[2] Its location ultimately led to the British Army taking over the site in 1950 for a security installation during The Troubles, then the police, being returned to the local council only in August 2007.

It was again excavated in October 2007, by the Channel 4 archaeological show Time Team, leading to the uncovering of part of the moat and walls of the castle.