All Creatures Great and Small (franchise) "James Herriot", and are set in the fictional town of "Darrowby", based on a combination of Thirsk, Richmond, Leyburn and Middleham.. In the books James Herriot work with fellow veterinary surgeons, Siegfried and Tristan Farnon, based on real-life counterparts, "Donald Sinclair" and his brother "Brian Sinclair" respectively. Wight also used the name "Helen Alderson" for his wife, Joan Danbury. In America the books were collected as pairs into omnibus volumes, as the publisher felt they were too short to publish independently. The title chosen for the first book in the series "All Creatures Great and Small" (and subsequently one of
Donald Sinclair (veterinary surgeon) Donald Sinclair (veterinary surgeon) Donald Vaughan Sinclair (22 April 1911 – 28 June 1995) was a British veterinary surgeon (graduated from the Royal (Dick) School of Veterinary Studies, 1933) made famous as the eccentric character Siegfried Farnon in the semi-autobiographical books of James Herriot (Alf Wight), later adapted for film and television as "All Creatures Great and Small". In 1939, he bought an existing veterinary practice at 23 Kirkgate, Thirsk, Yorkshire, and in July 1940 hired Wight to run it while he (Sinclair) was undertaking his war service in the Royal Air Force. However, Sinclair had deliberately misrepresented himself as