Aberdeen-based architect. Born in Guestrow (Aberdeen), Simpson was the son of a clothier in the city. Educated at Aberdeen Grammar School, he trained in London and travelled to Italy, before returning to Aberdeen in 1813. He established a private architectural practice, while living at Bon Accord Square.
Along with his rival John Smith (1781 - 1852), Simpson was responsible for shaping much of the 'Granite City'. Together they worked in King Street, but Simpson is noted for work on the city's Union Street, together with the Medico-Chirurgical Society building (1818), Aberdeen Music Hall (1820), the Old Royal Infirmary (1832), Marischal College (1837), Mechanic's Institute (1845) and several churches, including St. Andrew's Episcopal Cathedral (1816), many of which are now listed for their architectural merit. He was also noted for his work on country houses, including Stracathro (1827) and Letham Grange (1830). His fine building on Castle Street in Aberdeen, which was the headquarters of the North of Scotland Bank (1844), is now a grand public house bearing his name.
