Moore was an American poet who lived from 1887 until 1972. She worked within the framework of American Modernism with great wit but also explored the French syllabic tradition. She didn't shy away from straight-talking and thinking (as Sylvia Plath discovered when she sent her some poems).
Photograph by George Platt Lynes (1935)
More on syllabic verse traditions and its English language exponents here: http://en.wikipedia.org/wiki/Syllabic_verse.