Gadzira shanduro yakaoma zvikuru yemutsara uyu Shongwe yaO'Brien ishongwe yedombo yakatenderera panenge pakati chaipo pematombo.
Chokwadika, shanduro yakaoma zvikuru yemutsara wacho ndeiyi "O'Brien's Tower ishongwe yedombo yakatenderera iri pedyo nepakati pematombo yakavakwa naSir Cornelius O'Brien, muzukuru waMambo Mukuru weIreland Brian Boru, kuti afadze vashanyi vechikadzi".