Barnabas O'Brien, 6th Earl of Thomond

In 1644 the council of the confederation forbade Thomond's agents to collect his rents, and even formed a scheme for seizing his chief stronghold at Bunratty, which his uncle, Sir Daniel O'Brien, was appointed to carry out.

Thereupon Thomond, finding that no troops were forthcoming wherewith to defend Bunratty Castle, entered into negotiations with the parliamentarians, in spite of the remonstrances of Edward Somerset, Earl of Glamorgan.

[2] A few years later Thomond petitioned parliament for the recovery of £2,000 which had been seized in Bunratty, pleading that his real estate was in the hands of the Irish rebels, and that he had spent £16,000 on the parliamentary cause.

[7] Thomond died in November 1657, and his will, dated 1 July 1657, in which he left some bequests to Great Billing, was proved in England on 6 February, and in Ireland on 28 April of the same year.

[8] Pollard mentions that the authors of Lodge's Peerage (ed Archdall) maintained that Thomond was of strict loyalty, religion, and honour, and that his lands were taken from him during the rebellion through the unnatural conduct of his nearest relations;[9] it was also believed that he gave up Bunratty at Ormonde's instigation.