Despite earlier promises to pass his crown to one of his Flemish, Viking or Norman relatives, English king Edward The Confessor dies in 1066, leaving his crown to Anglo-Saxon Harold Godwinson, causing a bloody succession war.
What do Ancient Rome, Medieval Florence, and the Eastern Han Dynasty have in common? No not great art or literature--sword fights. Lots and lots of sword fights. Sure some of them gratuitous in terms of advancing the plot, but how else are you going to kill your enemies (or zombies, or vampires)?