Premise: Richard III of England . Arrangements were made for Edward 's coronation on 22 June 1483 ; but , before the young king could be crowned , his father 's marriage to his mother Elizabeth Woodville was declared invalid , making their children illegitimate and ineligible for the throne . Richard was struck down in the conflict , making him the last English king to die in battle on home soil and the first since Harold Godwinson ( who was killed at the Battle of Hastings in 1066 ) .
Hypothesis: Richard III of England was king.
Label: ENTAILMENT