[5] He became a merchant based in London, married Frances Anna Rougemont, and together they had a son Frederick Hardman (1814–1874).
[7] In March 1828, Coleridge wrote to him about a new magazine that they had been planning, which eventually became the short-lived London Review (1829) under editor Joseph Blanco White.
[8] He completed a number of translations for Blackwood's Magazine; they were, in his own words, "drawn chiefly from German and Danish sources and consisted of romantic and piquant tales, freely altered from the originals and adapted to British taste and feeling.
"[9] These included "The Robber's Tower", based on Heinrich Clauren's "Das Raubschloß", which may have been a source of inspiration for Edgar Allan Poe's "The Fall of the House of Usher" (1840),[10] and "The Headsman", based on Lauritz Kruse's "Das Verhängnis", which might have been read by James Fenimore Cooper before writing his novel The Headsman: The Abbaye des Vignerons (1833).
[12][13] Hardman died on 3 March 1870 while living at Tudor Place, Richmond Green, and was buried at St Mary's Church, Twickenham.