He was born in St. James's Street, London, on 10 June 1787, the son of a China merchant who died about five months before his son's birth, leaving a widow with five infant daughters. Indulged and petted by his mother, Harlow was sent when quite young to Dr. Barrow's classical school in Soho Square, and subsequently to Mr. Roy's school in Burlington Street. He was for a short time at Westminster School, but having shown a predilection for painting, he was placed under Henry De Cort, the landscape-painter. He next worked under Samuel Drummond, A.R.A., the portrait-painter, but after about a year entered the studio of Sir Thomas Lawrence, P.R.A. This step is said to have been taken at the suggestion of Georgiana, duchess of Devonshire; but Harlow's natural affinity to Lawrence's style in painting would be quite sufficient to account for his choice. Harlow paid Lawrence handsomely for his admission and the right to copy, but according to the contract was not entitled to instruction.
He remained for about eighteen months in Lawrence's studio, copying his pictures, and occasionally drawing preliminary portions of Lawrence's own productions. A difference about Harlow's work for one of Lawrence's pictures led to a breach with Lawrence, and Harlow rendered reconciliation impossible by painting a caricature signboard for an inn at Epsom in Lawrence's style and with Lawrence's initials affixed to it.
He exhibited for the first time at the Academy in 1804, sending a portrait of Dr. Thornton. In later years he exhibited many other portraits. His practice in this line was extensive. His portraits are well conceived, and, though much in the manner and style of Lawrence, have a character of their own. His portraits of ladies were always graceful and pleasing. He was less successful, owing to his defective art-education, in historical painting, in which he aspired to excel. His first exhibited historical pictures were Queen Elizabeth striking the Earl of Essex, at the Royal Academy, 1807, and The Earl of Bolingbroke entering London, at the British Institution, 1808.
In 1818 Harlow, conscious of deficiencies in his executive powers, visited Italy for the purpose of studying the old masters. He was elected a member for merit of the Academy of St. Luke at Rome, a most unusual distinction for an English artist, and was invited to paint his own portrait for the Uffizi gallery of painters at Florence. He painted a picture of Wolsey receiving the Cardinal's Hat in Westminster Abbey, and presented it to the Academy at Rome.
His artistic progress in Italy was remarkable, but on his return to England on 13 Jan. 1819 he was seized with a glandular affection of the throat, which being neglected proved fatal on 4 Feb. He was in his thirty-second year. He was buried under the altar of St. James's, Piccadilly, and his funeral was attended by the eminent artists of the day. An exhibition of his principal works was held in Pall Mall. His collections, including many sketches, were sold by auction 21 June 1819.
Harlow is one of the most attractive figures in the history of English painting. His works only suggest what lie might have achieved. Many of his portraits have been engraved, and those of James Northcote, Fuseli, Thomas Stothard, William Beechey, John Flaxman, and others are highly esteemed. His own portrait, painted by himself for the gallery at Florence, was engraved for Ranalli's Imperiale e Reale Galleria di Firenze. (accessed from Wikipedia on 6/25/09: http://en.wikipedia.org/wiki/George_Henry_Harlow)