King Rögnvaldr Óláfsson
... that King Rögnvaldr Óláfsson was assassinated by a knight named Ívarr and his accomplices?
... that <b id="mwBZI"><a class="mw-redirect" href="./Rögnvaldr_Óláfsson_(d._1249)" id="mwBZM" rel="mw:WikiLink" title="Rögnvaldr Óláfsson (d. 1249)">King Rögnvaldr Óláfsson</a></b> was assassinated by a knight named Ívarr and his accomplices?