Prester John
Various attributed arms have been given to Prester John. The nave of Canterbury Cathedral, which is adorned with heraldic bosses, represents Prester John with "Azure, the Saviour on the Cross or". In the 16th century, cartographer Abraham Ortelius produced a speculative map of John's empire in Africa, featuring "A lion rampant facing to the sinister holding in its paws a quasi-Tau cross of full height".