Jan 6 Byzantine Emperor Constantine XI is crowned at Mistra. Apr 25 Anti-pope Felix V resigns Sep 8 Battle of Tumu Fortress - Mongolians capture the Chinese Emperor Yingzong of Ming Oct 28 Christian I is crowned King of Denmark in the Church of Our Lady, Copenhagen, establishing the House of Oldenburg (still rules the Danish throne today) 1448 Events in History by Year 1450