Events in History Aug 5 Battle of Maserfield - Penda of Mercia defeats and kills Oswald of Bernicia Sep 17 Arab forces under Amr ibn al-'As conquer Alexandria Oct 12 John IV ends his reign as Catholic Pope Nov 24 Theodore I begins his reign as Catholic Pope Deaths in History Feb 28 Oswald, English King of Northumbria and saint, dies in the Battle of Maserfield at about 38 Oct 12 Pope John IV, Dalmatian born Pope (640-42), dies 641 AD On This Day in History 644 AD