Costumes of the 13th century. A prince and two knights swearing allegiance to a king, the investiture of a knight, a wedding ceremony, and a king with crown over chainmail armour. From a manuscript in Metz library. Chromolithograph from Hefner-Alteneck's Costumes, Artworks and Appliances from the Middle Ages to the 17th Century, Frankfurt, 1889. Illustration by Dr. Jakob Heinrich von Hefner-Alteneck, lithographed by C.R. Dr. Hefner-Alteneck (1811 - 1903) was a German museum curator, archaeologist, art historian, illustrator and etcher.