Italian knights from the early 15th century from a bronze basrelief by Simone di Bardi, Donatello's brother, and Antonio Silarete in St. Peter's in Rome. Chromolithograph from Hefner-Alteneck's "Costumes, Artworks and Appliances from the early Middle Ages to the end of the 18th Century," Frankfurt, 1883. IIlustration drawn by Hefner-Alteneck, lithographed by C. Regnier, and published by Heinrich Keller. Dr. Jakob Heinrich von Hefner-Alteneck (1811-1903) was a German archeologist, art historian and illustrator. He was director of the Bavarian National Museum from 1868 until 1886.