Barclay, whose elder brothers joined the army and the navy, entered the banking house of Barclay owned by his cousins. At the approximate age of 20 he went to Aix la Chapelle and by 1790 had built up both a banking house and a wine shipping business there.
In January 1798 he was forced to leave The Hague to avoid arrest by the French party. Returning to England, he renewed contact with Dundas through the Scottish branch of the family and unavailingly offered his services as a commissioner of accounts to the army in the West Indies. A friend of his warned him that he was too little of a ‘slave’ to ministers to commend himself to them and urged, ‘Buy a borough, my friend, and you will become instantly an accomplished politician’. But he approached Grenville again, wishing to be rewarded for his services and hoping for a consulship at Emden or Altona.
Barclay described himself at the time of this unsuccessful application as a ‘warm supporter of ... government both in and out of Parliament’. He subsequently voted with opposition on the Prince of Wales’s claims and on the Nottingham election bill, 4 Mar., 3 May 1803. Writing to his friend Sir John Sinclair, 15 Dec. 1803, he was dissatisfied with ‘the state of parties’ and especially with Pitt’s ‘political manoeuvres’ and the split in the Whigs, which prevented the ‘manly opposition of Mr Windham’, in concert with Lord Grenville, from becoming an effective challenge to Addington’s inadequate defence measures.
Sir Robert Barclay has voted with you constantly—as he insinuates, at my instigation, and for your sake I cannot undertake to say that this is so—but if he sticks to you, he will perhaps want a little job now and then. He is a corn factor.
PRO 30/8/120, f. 197.
This probably fell on deaf ears. In any case, Barclay opposed Pitt’s additional force bill in June and was listed in September first ‘Fox and Grenville’, then among ‘the persons in opposition not quite certain’.
In opposition he remained, as the Treasury admitted in July 1805. He had voted with them on war with Spain, 12 Feb., on defence, 21 Feb., for the continuation of the naval commission of inquiry, 1 Mar., and on Melville’s case and the Duke of Atholl’s claims, 8 Apr., 7, 12 June. He was in the Grenville ministry’s majority for the repeal of the Additional Force Act, 30 Apr. 1806, and Grenville encouraged him to offer himself at Wells, on the assumption that he could not sit again for Newton at the election of 1806. But he was able to give up Wells, in a manner he thought gratifying to government, on securing the renewal of his tenure at Newtown (with power of vacating for another person) until the next dissolution. This was his pretext for urging Grenville to appoint him to office, whether compatible with Parliament or not, 30 Oct. 1806.
On 3 July 1807 the Prince of Wales stood sponsor to Barclay’s infant son. Out of Parliament, he seems to have pinned his hopes on the Prince. In 1812 he offered the Prince’s secretary his services as an election broker. His affairs were in some disarray when in 1813 he obtained a place in Mauritius. Shipwreck on arrival there, 30 Jan. 1814, disposed of his effects. He wrote home to beg for an additional £500 p.a. to recoup himself. He was not implicated in the scandal of peculation among Mauritius officials that burst in 1823, and had got over his financial difficulties by then. He remained on the island as partner in a wine shipping business and died 14 Aug. 1839.
