<a href="https://en.wikipedia.org/wiki/Battle_of_Maserfield" id="mwHA" rel="mw:WikiLink" title="Battle of Maserfield">Battle of Maserfield</a>: <a href="https://en.wikipedia.org/wiki/Penda_of_Mercia" id="mwHQ" rel="mw:WikiLink" title="Penda of Mercia">Penda of Mercia</a> defeats and kills <a href="https://en.wikipedia.org/wiki/Oswald_of_Northumbria" id="mwHg" rel="mw:WikiLink" title="Oswald of Northumbria">Oswald of Northumbria</a>.