Sir Cahir O'Doherty (1587<unk>1608) bụ onye ikpeazụ Gaelic Lord nke Inishowen. Mgbe Flight of the Earls na 1607, ọ nupụrụ isi megide nchịkwa Bekee na Ireland na ịkụ ndị Protestant na-ebi na ihe a maara dị ka O'Doherty's Rebellion. N'ịbụ ndị Gọvanọ George Paulet nke England kpaliri, Cahir na ndị na-eso ụzọ ya wakporo ma bibie Derry
ma gbaa ọtụtụ ụlọ ndị dị na Strabane na Lifford ọkụ n'afọ 1608. Agbanyeghị, onye isi ndị eze bụ Richard Wingfield (1st Viscount Powerscourt) weghachitere obodo ahụ na mbuso agha na 5 Julaị 1608, e gburu Sir Cahir na Rock of Doon n'oge Agha Kilmacrennan na 5 Julaị 1608. Ndị nnupụisi ndị fọdụrụ mgbe ahụ bụ Sir Arthur Chichester onye natara ikike nke Inishowen maka onwe ya, tinyere onyinye nke O'Doherty dum 170,000 acres nke ala na Inishowen.