Memmi, Simone (called also Martini), an eminent Italian painter, was born at Siena in 1285, and was probably a pupil of Giotto. He was invited by the pope to Avignon to do some work for him. His great picture in St. Peter's has perished, but there are several of his works in the churches at Florence, Pisa, and Siena. In the Campo Santo of Pisa are several frescos of the history of St. Ranieri, and the far-famed Assumption of the Virgin and a Choir of Angels. His large pictures may be seen at Florence, among. which are several of Christ, of St. Peter the martyr, and St. Domenico. There are some more of this class of pictures in the churches of Siena. Memmi died at Avignon in 1344. See Hoefer, Nouv. Biog. Generale, s.v.; Spooner, Biog. Hist. of the Fine Arts, s.v.