Tyrconnel, Rory O'Donnell, earl of
Tyrconnel, Rory O'Donnell, earl of, 1575–1608, Irish chieftain; brother of Hugh Roe O'Donnell, lord of Tyrconnel, whom he succeeded as chief of the clan in 1602. After the rebellion in which his brother had been a leading figure, Rory went to London (1603) to submit to James I. He was knighted, created earl, and made sheriff of Donegal. However, he soon engaged in a conspiracy with Spain to seize Dublin Castle and the government and to start a general uprising. His flight (1607) with Hugh O'Neill, 2d earl of Tyrone , after the discovery of the plot, signified the end of political power of the Irish tribal chieftains. He died at Rome and was posthumously attainted (1613) by the Irish Parliament.
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