Eric IX (Eric the Saint), d. 1160, king of Sweden. He led (1157?) a Christian crusade to Finland, where he left the bishop of Uppsala in charge of missionary work. While attending mass he was killed by a Danish prince. Soon afterward the people began to revere him as a saint, and c.1290 he became the patron saint of Sweden. Feast: May 18.
"Eric IX." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (February 21, 2018). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/eric-ix
"Eric IX." The Columbia Encyclopedia, 6th ed.. . Retrieved February 21, 2018 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/eric-ix