The <a href="https://en.wikipedia.org/wiki/Battle_of_Lena" id="mwFw" rel="mw:WikiLink" title="Battle of Lena">Battle of Lena</a> takes place between King <a href="https://en.wikipedia.org/wiki/Sverker_II_of_Sweden" id="mwGA" rel="mw:WikiLink" title="Sverker II of Sweden">Sverker II of Sweden</a> and his rival, Prince Eric, whose victory puts him on the throne as King <a href="https://en.wikipedia.org/wiki/Eric_X_of_Sweden" id="mwGQ" rel="mw:WikiLink" title="Eric X of Sweden">Eric X of Sweden</a>.<sup about="#mwt19" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-2"}}' id="cite_ref-2" rel="dc:references" typeof="mw:Extension/ref"><a href="./January_31#cite_note-2" id="mwGg" style="counter-reset: mw-Ref 2;"><span class="mw-reflink-text" id="mwGw">[2]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-2"><cite about="#mwt16" class="citation book cs1" id="mwBrk"><a class="external text" href="https://books.google.com/books?id=vNRRAQAAIAAJ&amp;pg=PA200" id="mwBro" rel="mw:ExtLink nofollow"><i id="mwBrs">Medium Aevum</i></a>. Society for the Study of Mediæval Languages and Literature. 1932. p.<span id="mwBrw" typeof="mw:Entity"> </span>200.</cite><span about="#mwt16" class="Z3988" id="mwBr0" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Medium+Aevum&amp;rft.pages=200&amp;rft.pub=Society+for+the+Study+of+Medi%C3%A6val+Languages+and+Literature&amp;rft.date=1932&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DvNRRAQAAIAAJ%26pg%3DPA200&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AJanuary+31"></span></span>