1144386 Enzo, King of Sardinia (litho) by French School, (19th century); Private Collection; (add.info.: Enzo (or Enzio) (c. 1218-72) was an illegitimate son of Emperor Frederick II, who appointed him King of Sardinia in 1238. He played a major role in the wars between Guelphs and Ghibellines in northern Italy, and was captured by his enemies in 1249).