The eldest son of David Strang of Kirkwall in Orkney, by his second wife Jean, daughter of Malcolm Scollay of Hunton, he was born at Kirkwall on 14 July 1721. He entered the office of a brother, a lawyer in Edinburgh. He then was apprenticed to Richard Cooper, the elder, an engraver, for six years. Strange fought in the rising of 1745. While with the army at Inverness, he engraved a plate for the bank-notes of the planned Stuart government. He was at the battles of Prestonpans and Falkirk Muir in the Young Pretender's lifeguards; and was in hiding for some months after the Battle of Culloden.
Voluntary exile
After the amnesty Strange went to London and, carrying with him the Prince's seal, which had been left behind in Scotland, to Rouen, a centre of exiled Jacobites. There he studied anatomy under Claude-Nicolas Le Cat, and drawing under Jean-Baptiste Descamps. In 1749 he moved to Paris and placed himself under the engraver Jacques-Philippe Le Bas. There he learned drypoint and returned in 1750 to London. After a period of dealing in prints and working in London as engraver, Strange fell out with potential patrons at court, including Lord Bute. Princess Augusta of Saxe-Gotha wished an engraving to be made of a portrait of Frederick, Prince of Wales, her late husband, by Allan Ramsay, and one of Bute. Strange found the price too low, and refused the commission via William Chambers; it was taken up in 1758 by William Wynne Ryland who rose in royal favour under George III. Strange went to Italy in 1760. His connections afforded him a passport for travel in France—this was the height of the Seven Years' War—and introductions through Johann Georg Wille to Johann Joachim Winckelmann and Anton Raphael Mengs, and through Horace Walpole to Horace Mann. He encountered Richard Daltonon a mission to copy Italian artworks that overlapped with his own plans, and a future rival in Francesco Bartolozzi. He returned to England in 1765, with an international reputation as engraver already established.
Later life
Back in London, Strange exhibited pictures which he had collected, and prepared critical and descriptive catalogues. In 1768, troubles in the Incorporated Society of Artists, of which Strange was a member, led to the foundation of the Royal Academy. Strange opposed those breaking away, and he came to believe that the exclusion from the Academy of engravers was levelled against himself. His rival Francesco Bartolozzi was elected, ostensibly as a painter. With other engravers, Strange declined associate membership. In 1775 he published on his grievances in An Inquiry into the Rise and Establishment of the Royal Academy of Arts. He then took his family over to Paris, where they remained in the Rue d'Enfer until 1780. Strange wished to engrave Anthony van Dyck's portrait of Queen Henrietta Maria, which belonged to George III. He obtained access to the picture via Benjamin West, a friend, and the print was published. in Paris in 1784, along with one of the Vandyck of Charles I on his horse. He was received by Louis XVIII and Marie Antoinette. Then he engraved West's picture of The Apotheosis of the Royal Children, finishing in 1786, and on 5 January 1787 was knighted by George III.
Death
Strange died at his house, No. 52 Great Queen Street, Lincoln's Inn Fields, on 5 July 1792, and was buried at St. Paul's, Covent Garden. Besides Strange's portrait by Greuze, there is a portrait by Romney and one by Raeburn.
Works
Strange published a portrait of the Young Pretender at the time of the 1745 rebellion. In France he engraved Carl Vanloo's Cupid, with Wouverman's Return from Market. In London his engraved works included the Magdalen and Cleopatra of Guido Reni, and the Apollo and Marsyas of Andrea Sacchi. During four years in Italy he was engaged in making copies of pictures to be engraved on his return, always using his own drawings. Of these drawings most of the water-colours went to Lord Zetland, and the chalks to Lord Wemyss. Many of the engravings were executed and published at Paris. He declined remunerative work such as book-plates and book illustrations. For Bruce of Kinnaird, he engraved the illustrations for Bruce's work on Pæstum, but this was never published. Classical portraits in Thomas Blackwell's History of the Court of Augustus, assumed to be his, are unsigned and not otherwise authenticated. Technically, Strange habitually employed drypoint, and was followed by Raffaele Morghen, William Woollett, and William Sharp. He disliked the stipple engraving of Bartolozzi. He planned a series of 50 of his major works as legacy, from early in his career. Eighty sets of selected impressions of these were bound in atlas folio, with a dedication to the king, and published in 1790, with a portrait after Jean-Baptiste Greuze, and an introduction describing the progress of engraving. Apart from Van Dyck, he chose mainly Italian masters.