Whakaotihia te rerenga e whai ake nei: I whanau a Rosa O'Doherty, ko Rosa te tamahine a Sir John O'Doherty, me te tuahine iti o Sir Cahir O'Doherty. Ko ngā O'Doherty ngā rangatira tuku iho o Inishowen. I whawhai a Sir Cahir ki te taha o te Karauna i te wa o te Tyrone's Rebellion (1594-1603). I te tau 1608, i riri ia ki te tukino i a ia e nga rangatira o te rohe, ka whakarewahia e ia te O'Doherty's Rebellion na
te tahunga o Derry. I hinga a Sir Cahir, i mate i te Pakanga o Kilmacrennan, a i tangohia a Inishowen i te whanau.