Crossword clues for the word: LEOIII The word LEOIII has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for LEOIII Showing 1 to 5 of 5 results Clue(s) "Byzantine emperor known as ""the Isaurian""" Pope after Adrian I Pope of 795-816 Pope who crowned Charlemagne emperor Pope: 795-816