Saint George Killing the Dragon. Date/Period: 1434/35. Painting. Tempera on panel Tempera on panel. Height: 1,556 mm (61.25 in); Width: 981 mm (38.62 in). BERNAT MARTORELL. BERNAT MARTORELL (1390-1452). Martorell, Bernat, the Elder. BERNARDO MARTOREL