John of Bohemia (born 1296)

John of Bohemia, also called the Blind or of Luxembourg, was the Count of Luxembourg from 1313 and King of Bohemia from 1310 and titular King of Poland. He is well known for having died while fighting in the Battle of Crécy at age 50, after having been blind for a decade. In his home country of Luxembourg, he is considered a national hero. Comparatively, in the Czech Republic, Jan Lucemburský is often recognized for his role as the father of Charles IV, Holy Roman Emperor, one of the more significant Kings of Bohemia and one of the leading Holy Roman Emperors.