He is considered the best-known and prolific of the Sartorius family of artists. He was patronised by the leading sportsmen of the day, such as the Prince of Wales, the Earl of Derby, Lord Foley, Sir Charles Bunbury, and many others, and his pictures (some of them of large size) were found in many country houses. From 1781-1824 his name appeared as an exhibitor in the catalogues of the Royal Academy, and a list of the 74 pictures which he showed there can be found in Walter Gilbey"s in "Animal painters of England from the year 1650, volume 2".
Some of his best known pictures were portraits of the racehorse "Escape", belonging to the Prince of Wales, Sir Charles Bunbury"s "Grey Diomed", a Mr.
Robson"s trotting mare "Phenomena", and the famous thoroughbred "Eclipse", from a drawing by his father (see "Sportsman"s Repository" by John Scott, 1845). "A Secretariat of Four Hunting Pieces" after his pictures, was published in 1790 by J. Harris, the plates being engraved by Peltro William Tomkins and James Neagle (1760?-1822).
John North. Sartorius died in 1828.