Grandma Moses, byname of Anna Mary Robertson Moses, original name Anna Mary Robertson, (born September 7, 1860, Greenwich, New York, U.S.—died December 13, 1961, Hoosick Falls), American folk painter who was internationally popular for her naive documentation of rural life in the United States in the late 19th and early 20th centuries. Anna Robertson had only sporadic periods of schooling during her childhood. At age 12 she left her parents’ farm and worked as a hired girl until she married…