Battle of York
... that two Northumbrian kings, Ælla and Osberht, were killed by Vikings in 867 at the Battle of York?
... that two Northumbrian kings, <a href="./Ælla_of_Northumbria" id="mwtA" rel="mw:WikiLink" title="Ælla of Northumbria">Ælla</a> and <a href="./Osberht_of_Northumbria" id="mwtQ" rel="mw:WikiLink" title="Osberht of Northumbria">Osberht</a>, were killed by Vikings in 867 at the <b id="mwtg"><a href="./Battle_of_York_(867)" id="mwtw" rel="mw:WikiLink" title="Battle of York (867)">Battle of York</a></b>?