O'Doherty's rebellion took place in 1608 when Sir Cahir Rua O'Doherty (Irish: Sir Cathaoir Ruadh Ó Dochartaigh), Lord of Inishowen, began an uprising against the Crown authorities in the west of Ulster in the north-west of the Kingdom of Ireland. O'Doherty, a Gaelic chieftain, had been a long-standing supporter of the Crown, but having been angered at his treatment by local officials he launched an attack on Derry, burning the town. O'Doherty may have hoped to negotiate a settlement with the government, but, after his death in a skirmish at Kilmacrennan, the rebellion collapsed with the last survivors being besieged on Tory Island.