Mepụta ihe dị mgbagwoju anya nke ahịrịokwu a Ụlọ elu O'Brien bụ ụlọ elu nkume dị gburugburu na etiti etiti ugwu ahụ.
N'ezie, ụdị ahịrịokwu dị mgbagwoju anya bụ "O'Brien's Tower bụ ụlọ elu okwute gbara gburugburu nke dị nso na etiti okwute nke Sir Cornelius O'Brien, onye si n'agbụrụ High King Brian Boru nke Ireland, wuru, iji mee ka ụmụ nwanyị na-eleta ya nwee mmasị".