Kammala wannan jumla: An haifi Rosa O'Doherty, Rosa ita ce 'yar Sir John O'Doherty, kuma ƙaramar' yar'uwar Sir Cahir O'Doherty. O'Dohertys sune masu mulkin gargajiya na Inishowen. Sir Cahir ya yi yaƙi a gefen kambi a lokacin Tawayen Tyrone (1594-1603). A shekara ta 1608, ya fusata da yadda jami'an yankin suka bi da shi, ya kaddamar da O'Doherty's Rebellion ta
ƙonewa Derry. Sir Cahir ya ci nasara kuma aka kashe shi a yakin Kilmacrennan, kuma an kwace Inishowen daga dangin.