1043:

Edward the Confessor crowned

Elected by popular acclamation, Edward (known as "the Confessor" for his piety) had Norman sympathies and had supposedly named William the Conqueror his successor, before choosing Harold Godwinson on his death-bed.

This item was suggested by John Herrmann, and the date was verified by Dawn Cotter. Thanks, John and Dawn!

1367:

Battle of Nájera

In an effort to restore Peter the Cruel of Castile to his throne, Edward the Black Prince embarked on a campaign, and was victorious at the first battle, which took place at Nájera.