Inge I
Christian was born at Nyborg Castle in 1481 as the son of John, King of Denmark and his wife, Christina of Saxony. Christian descended, through Valdemar I of Sweden, from the House of Eric, and from Catherine, daughter of Inge I of Sweden, as well as from Ingrid Ylva, granddaughter of Sverker I of Sweden. His rival Gustav I of Sweden descended only from Sverker II of Sweden and the House of Sverker.