Nothing is known of Allan’s family background. The only relations mentioned in his will are a widowed aunt Jane Smith of Beaumont Place, Shepherds Bush, and her two unmarried daughters Jane and Margaret.
During the whole of the late prosperous campaign in Mysore Major Allan’s conduct was such as to confirm his former distinguished reputation and to obtain the repeated applause of the commander in chief. But on the memorable day of the assault on Seringapatam his judgment, valour, and humanity were so conspicuous in his successful efforts to protect the family of Tippoo Sultan in the palace, and ultimately to induce them to surrender to the British troops, that I thought myself bound to mark my gratitude to Major Allan by appointing him to be one of my honorary aides de camp.
Ibid. H79.
Dissatisfied that he had not been appointed quartermaster general and feeling that ‘there was nothing that the service offered which would induce me to remain in the country, now that I could retire with propriety’, he returned to England immediately after the campaign.
His friendship with Hobart, now a secretary of state in Addington’s government, brought Allan to the attention of administration in 1802. He is not known to have contested any borough at the general election, but was reported to be coming in for Aldborough on the Duke of Newcastle’s interest at the instigation of his friend Lord Harrington. Moreover, Charles Rashleigh wrote to Pole Carew on 2 July, in the course of a letter on Cornish elections, inquiring after Allan’s christian name.
Soon after entering the House, Allan worked through Hobart to secure military employment. As there was no room for him in the quartermaster general’s department, he was attached to Sir James Craig, commander of the Eastern District, as a military surveyor. From Colchester he wrote to Hobart on 31 Oct. 1803:
as the motives which induced me to get employed at this particular period appear to be generally known, I have experienced great civility from all the military which I own, as a Company Officer, I did not expect ... as far as I can recollect from Colonel Gordon, Sir James Craig will be disposed to have me immediately about him, in case there should be any thing to do in this quarter. I am therefore perfectly satisfied with my present situation and should have been very unhappy to have been unemployed in the event of this country being invaded.
Hobart mss J403, 450, 490.
The extent of Allan’s duties are obscure for he appears in none of the Army Lists of the period. It was the pressure of military commitments that he gave as the reason for his late arrival for the canvass at Berwick in 1806. Although promised government support, he stood only a token contest to make known his intention of maintaining his interest in the borough.
Buckinghamshire reported to Sidmouth on 20 Feb. 1808 that he ‘had a very long and satisfactory conversation with Allan ... and I am convinced that my wishes will in future be conclusive upon his conduct’.
I cannot help flattering myself that the hope I have long cherished will now be realized, and that I shall see Lord Wellesley a member of the same cabinet with your lordship. You are united in friendship, and ought to be in politics.
Add. 37295, ff. 109, 110; Grey mss, Lauderdale to Grey, Sunday [15 Oct. 1809]; SRO GD51/5/364/16; Pellew, Sidmouth, iii. 107.
After his efforts in 1808 and a brief defence of the Peninsular campaign, 24 Feb. 1809, he spoke only once more, 31 May 1810, critically of the East India Company for breaking faith with the natives. The day before he had presented a Berwick petition for economy and reform.
In the Parliaments of 1812 and 1818, although a supporter of government and classed as such by the Treasury, he was capable of acting independently. A member of the select committee on East India Company affairs, he opposed Christian missions to India, 22 June 1813. In the next two sessions he steadily opposed any revision of the Corn Laws. He voted against continuation of the property tax, 18 Mar. 1816. His certain votes in support of government were on the civil list, 8 May 1815, the army estimates, 6 Mar. 1816, for the suspension of habeas corpus, 23 June 1817, and for the prosecution of radical booksellers, 21 May 1818; against Tierney’s censure motion, 18 May 1819, and for the foreign enlistment bill, 10 June 1819. He was close enough to government to be placed on Liverpool’s lists for dinner parties, and Liverpool referred to him as one of the few directors of the East India Company ‘with whom I am personally acquainted’.
Allan did not contest Berwick in 1820 and died 14 Sept. 1820, aged 56. After making numerous small bequests he left the residue of his personal estate and effects to Fanny Franklyn, the wife of Henry Franklyn of Copthall House, near Luton, Bedfordshire, with remainder to her son Allen Franklyn.
