An attempt to foment the enmity of the O'Donnells against him was frustrated by Shane's capture of Calvagh O'Donnell, whom he kept a close prisoner for nearly three years.
Sussex, indignant at Shane's request for his sister's hand in marriage, and his demand for the withdrawal of the English garrison from Armagh, was not supported by the queen, who sent the earl of Kildare to arrange terms with O'Neill.
Turlough had been elected tanist (see Tanistry) when his cousin Shane was inaugurated the O'Neill, and he schemed to supplant him in the higher dignity during Shane's absence in London.
The feud did not long survive Shane's return to Ireland, where he quickly re-established his authority, and in spite of Sussex renewed his turbulent tribal warfare against the O'Donnells and others.
Sussex had tried in 1561 to procure Shane's assassination, and Shane now laid the whole blame for his lawless conduct on the lord deputy's repeated alleged attempts on his life.
He divorced his first wife, a daughter of James MacDonnell, and treated his second, a sister of Calvagh O'Donnell, with gross cruelty in revenge for her brother's hostility; Calvagh himself, when Shane's prisoner, he subjected to continual torture; and Calvagh's wife, whom he made his mistress, and by whom he had several children, endured ill-usage at the hands of her drunken captor, who is said to have married her in 1565.
Turlough Luineach O'Neill (c. 1530-1595), earl of Clanconnell, was inaugurated chief of Tyrone on Shane's death.
In spite of the traditional enmity between the O'Neills and the O'Donnells, Tyrone allied himself with Hugh Roe O'Donnell, nephew of Shane's former enemy Calvagh O'Donnell, and the two chieftains opened communications with Philip II.
Antrim, was named Shane's Castle.
In 1793 he was raised to the peerage of Ireland as Baron O'Neill of Shane's Castle, and in 1795 was created a viscount.
1721), eldest son of John O'Neill of Shane's Castle.
William Chichester (1813-1883), ISt Baron O'Neill, a clergyman, on succeeding to the estates as heir-general, assumed by royal licence the surname and arms of O'Neill; and in 1868 was created Baron O'Neill of Shane's Castle.
There are, however, remains of other ancient castles, as Olderfleet, Cam's, Shane's, Glenarm, Garron Tower, Redbay, &c., but the most interesting of all is the castle of Dunluce, remarkable for its great extent and romantic situation.