1) Edward the Confessor died without an heir, leaving three men to claim the English throne - Harold Godwinson, William Duke of Normandy, and Harald Hardraada of Norway.
2) Harold Godwinson claimed that Edward named him as his successor on his deathbed and was crowned king, though others questioned his legitimacy with no royal blood.
3) William Duke of Normandy claimed Edward had promised him the throne in 1051 and that Harold had sworn an oath of loyalty to him, though Harold denied the oath's validity once he became king.