Bernard of Italy

Bernard (797 – 17 April 818) was the King of Italy, from 810 to 817, within the Carolingian Empire. He was an illegitimate son and successor of King Pepin of Italy. He plotted against his uncle, Emperor Louis the Pious, when the latter's Ordinatio Imperii made Bernard a vassal of his cousin Lothair. When his plot was discovered, Louis had him deposed by the end of 817, and then condemned and blinded, a procedure which killed him.

Source: Wikipedia — https://en.wikipedia.org/wiki/Bernard_of_Italy