Luca della Robbia was a Florentine sculptor who is currently thought to have lived from 1400-1482. In this paper Marquand brings into chronological sequence the Madonnas which may be properly ascribed to Luca della Robbia - a few of which are in bronze or marble, but the great majority in glazed terracotta ware. The article includes plates of the key artwork discussed in the text. Marquand, as one of the co-founders of the American Journal of Archaeology and early professors of Art History at Princeton, sets up the foundational chronology used by subsequent historians of medieval art.