Referring to Eric of Pomerania as King Eric XIII of Sweden — as on an 18th century monument in لاندسكرونا stating that the town was founded by king Erik XIII in 1413 — is a later invention, counting backwards from إريك الرابع عشر (1560–68), who adopted his numeral according to a fictitious history of Sweden[لغات أخرى]. Going back into prehistory, it is not known how many Swedish monarchs were named Eric before this one (at least six were).