London, and in 1617 was recommitted to the Tower on the information of his servant, Teige O'Hurley, alleging his involvement with William Stanley and several exiled Irish Catholic priests and nobles, including Hugh Maguire. Mac Carthaig was due for release in 1619 but was sent back to the Gatehouse in 1624, to "a little narrow close room without sight of the air", owing to the death of two of his sureties, Donogh O'Brien, 4th Earl of Thomond and Sir Patrick Barnewall. He was freed in 1626 on fresh sureties and won his protracted suit for the barony of Molahiffe in 1630 (although the lands were still in the possession of the English mortgagees in 1637). MacCarthy lived the remainder of his life in London, where he wrote a history of Ireland, Mac Carthaigh's Book, based on Old Irish texts. He wrote that, "although they [the Irish] are thought by many fitter to be rooted out than suffered to enjoy their lands, they are not so rebellious or dangerous as they are termed by such as covet it". He died in 1640. Legacy Mac Carthaig had a troubled relationship with his wife, who grew jealous of his inheritance and who informed on him to the English authorities. She also seems to have disapproved of his political choices, reportedly saying that she, "would not go begging in Ulster or Spain". In 1607 he reported that he had, "sent away that wicked woman that was my wife…whom I saw not nor could abide in almost a year before my commitment [imprisonment]". Nevertheless, he did have four children by her who are known: Teige (died as a boy in the Tower), Donal (who converted to Protestantism and married Sarah daughter of the MacDonnell Earl of Antrim), Florence (married Mary daughter of Donal III O'Donovan), and Cormac (Charles). In time, the title of Mac Carthaig Mór was subdued and the personal lands of Fínghin mac Donncha Mac Carthaig were distributed to English settlers, among them Richard Boyle, 1st Earl of Cork. The MacCarthy lords, including Donal na Pipi of Carberry, Donal MacCarthy (son of the earl) and Dermot MacCarthy of Muskerry were granted title to their lands, but had to surrender up to a third of their inheritance to the crown. Donagh MacCarthy, the son of Dermot Mac Carthaig, later created Viscount of Muskerry, would later be one of the leaders of the Irish Rebellion