https://en.m.wikipedia.org/wiki/House_of_Eric | Eric IX,[a] (Swedish: Erik Jedvardsson; Erik den helige; Sankt Erik; d. 18 May 1160), also called Eric the Holy, Saint Eric, and Eric the Lawgiver,[according to whom?] was a Swedish king in the 12th century, c. 1156–1160. The Roman Martyrology of the Catholic Church names him as a saint memorialized on 18 May.[2] He was the founder of the House of Eric, which ruled Sweden with interruptions from c. 1156 to 1250.