Happy Birthday Andrea della Robbia!! This Italian Renaissance sculptor, born in 1423, is one of the only ceramics sculptors (dear to me since this is one of my mediums) I have written about. His uncle was the famed sculptor, Luca della Robbia, and Andrea trained in the family studio, eventually taking it over. His uncle began the use of terra cotta (a low fire red clay), for altar pieces and smaller works since it was much lighter than stone and easier to transport. Andrea went on to become the most important ceramics glaze ("paint" for clay giving it color and shine) sculptor of the 15th century.