Poet and novelist B. S. Ingemann mentions the fictive person "Karl of Riise" in his historic novel "Valdemar the Victorius" (Danish: "Valdemar Seier"). "Karl of Riise" was a squire of archbishop Anders Sunesen during the Northern Crusades against the Estonians. In the Battle of Lindanise in 1219, "Karl af Rise" is mentioned as being the person who caught the Danish flag, Dannebrog, when it fell from the sky.