Ethel Susan Graham Bristowe, also known as E.S.G. Bristowe (1864–1952) was a British painter, and an early 20th-century author on alternative theories within Assyriology. She moved to Scotland in 1907 and lived for the rest of her life at Craig, a country house at Balmaclellan near Castle Douglas in Kirkcudbrightshire. Due to the absence of an exhibition space, in 1938 Ethel Bristowe bequeathed an art gallery to the people of Castle Douglas (with several of her works). The gallery was built as an extension to the town's library on the Market Hill.