Grandma Moses
From Longman Dictionary of Contemporary EnglishGrandma MosesˌGrandma ˈMoses → Moses, GrandmaMoses, GrandmaGrandma MosesMoses, Grandma (1860–1961) a US artist who did not begin painting until she was almost 70 years old. Her paintings of life in the American countryside are in the primitive style (=they are very simple, and made to look like children's paintings).