O’Brien, the eldest of the nine surviving children of the Member for Clare, 1802-26, grew up in the largely unrestricted and, as his sister Harriet remembered it, happy family life at Dromoland, though he was considered the serious one of the family and another sister, Grace, once wrote that ‘poor Lucius seems to be left out because he cannot or does not enter into that same union of mind’.
Lucius ably seconded Sir Edward’s lobbying for governmental relief, both in Clare and London, during the dearth the following year and William Wilberforce*, writing to Lord Calthorpe, 23 Oct. 1822, observed that he ‘seems quite filled with youthful zeal for the improvement of Ireland’ and, if brought into Parliament by his father, ‘I really think he will be a public blessing’. However, his intended entry into the Commons was put off, and although, as Lucius informed Calthorpe, 2 May 1823, he did ‘not yet despair of being able to prevail on him to give me his seat before the next session, as he has not assigned any reason for refusing me now’, he was made to wait for the dissolution.
O’Brien went over to Westminster in January 1827, and the following month his father related that he ‘writes highly delighted with his situation and I hope will apply himself to his parliamentary business. It will be a great source of occupation to him, as well as being the means of introducing him to the best society in England’.
Early that year he was listed by Planta, the patronage secretary, as likely to be ‘with government’ on this, and he duly voted for emancipation, 6, 30 Mar. The Irish secretary Lord Francis Leveson Gower acknowledged his family’s assistance to ministers that session, but turned down his patronage request on behalf of a relative, 17 June.
O’Brien did not offer at the general elections of 1831 and 1832 and was defeated in 1835, but he was Protectionist Member for Clare in the 1847 Parliament. A quiet, bookish man, with a penchant for versifying and antiquarianism, he succeeded to the baronetcy in 1837 and thereafter refurbished Dromoland and improved the surrounding estates.
