Eric Anundsson or Eymundsson was a semi-legendary Swedish king who supposedly ruled during the 9th century. The Norse sagas describe him as successful in extending his realm over the Baltic Sea, but unsuccessful in his attempts of westward expansion. There is no near-contemporary evidence for his existence, the sources for his reign dating from the 13th and 14th centuries. These sources, Icelandic sagas, are generally not considered reliable sources for the periods and events they describe.