Mezue ahịrịokwu na-esonụ: Culmore Fort bụ ebe dị mkpa dị mkpa jikọtara ya na obodo Derry. N'afọ 1608, mgbe Sir Cahir O'Doherty, onye bụbu onye ndu ndị Gaelic na-eguzosi ike n'ihe, malitere Nnupụisi O'Doherty site na ijide na
Ọ malitere site na mbụ ijide a ọkọnọ nke ngwá agha si Arsenal na Culmore mgbe ijide ya ọchịagha Captain Henry Hart.