• Name: Orme, Cosmo
• Gender: Male
• Birth Date: 1780
• Death Date: 12  August  1859
• Occupation: publisher

There are several possibilities for Orme: Orme, Daniel (1766–1837), painter and engraver, Orme, Edward (1775–1848), engraver and property developer, or William Orme (1771–1854), all three brothers from Manchester who variously moved to and worked in London. Moreover, in the beginning of the ninetheenth century each of them was at some point registered as a print seller or publisher. There is also a Henry Orme, registered as an apprentice in 1813.

But the likeliest attribution is Cosmo Orme, who is registered as a printer and bookseller between 1805 and 1841 in partnership with Thomas Norton Longman, together with various others including Owen Rees, Thomas Hurst and Thomas Brown. As a member of the Stationers' Company his dates are given as 1804 (date of freedom) to 1859. The 1809 entries do not link him to any particular circle, although it seems likely he is physically close to Johnson - as he would be given his location at 39 Paternoster Row. 1810 entries link him loosely to Lackington and Letterman, and on 2 November 1810 Godwin calls on Hurst and Orme (and again 28.10.1812). On 30 December 1812 he calls on Orme (adv Dr Rees) - which may be Abraham Rees, working on the Cyclopedia for Longman's. On 31.8.1815 Godwin calls on Longman (adv. Orme), and similarly on 18 April 1818 (adv. Rees and Orme); On 22.12.1821 he calls on O Rees and Orme - the former also being a partner of Longman - and again on 29.10.1824. And on 20.11.1824 he calls on 'Orme (Longman's) adv. Hurst.' (Hurst being Thomas Hurst another partner of Longman's. From 1828 there is a more consistent pattern of refering to Orme (Longman's). This signals the degree to which Orme's publishing house has been aborbed into Longman's. 10.2.1829, for example, refers to 'Call on Rees (Longman’s) ; adv. Orme' - where Rees is likely to be Owen Rees, another Longman's partner.

On balance, the identification of Cosmo Orme seems sound. There is nothing in his circles that suggests the more artistic connections to be expected from the other Orme's listed in the DNB.

According to the Annual Register (1859), Cosmo Orme was Scottish and having come to London looking for work, became a clerk at Longman's before becoming a partner about 1803. He retired in 1841 and in his will donated £300 to the Booksellers' Provident Institution (of which he was a founder) and £700 to the Booksellers' Retreat.

• DNB
• Annual Register (1859).

This table lists the people this person is most frequently noted with in the diary.