Italian family of sculptors and potters. They were active in Florence from the early 15th century and elsewhere in Italy and France well into the 16th. Family members were traditionally employed in the textile industry, and their name derives from rubia tinctorum, a red dye. Luca della Robbia founded the family sculpture workshop in Florence and was regarded by contemporaries as a leading artistic innovator, comparable to Donatello and Masaccio. . . . He is credited with the invention of the tin-glazed terracotta sculpture for which the family became well known. His nephew Andrea della Robbia, who inherited the workshop, tended to use more complex compositions and polychrome glazing rather than the simple blue-and-white schemes favoured by his uncle.