Erik Knutsson (Old Norse: Eiríkr Knútsson; c. 1180 – 10 April 1216), sometimes known as Eric X, was King of Sweden between 1208 and 1216. Also known as Erik the Survivor (Swedish: Erik som överlevde), he was, at his accession to the throne, the only remaining son of King Knut Eriksson and his queen, whose name may have been Cecilia. Struggles for the throne. Nothing is known about his youth, but he may have been born around 1180 in Eriksberg royal manor. When Erik's father, King Knut, died peacefully in 1195 or 1196, his four sons were youthful but not children.
https://en.wikipedia.org/wiki/Erik_Knutsson