Henry of Huntingdon suggests that the events related in the following tale occurred in the twenty-third year of Edward's reign (which began in June 1064):
... in the king's palace at Winchester, Tosti seized his brother Harold by the hair in the royal presence, and while he was serving the king with wine; for it had been a source of envy and hatred that the king showed a higher regard for Harold, though Tosti was the elder brother. Wherefore in a sudden paroxysm of passion he could not refrain from this attack on his brother. But the king predicted that their ruin was at hand, and that the vengeance of the Almighty would be no longer deferred. Such was the cruelty of these brothers that when they saw a well ordered farm, they ordered the owner to be killed in the night with his whole family, and took possession of the property of the deceased: and these men were the justiciaries of the realm! Tosti departed from the king and his brother in great anger and went to Hereford, where Harold had purveyed large supplies for the royal use. There he butchered all his brother's servants, and inclosed a head or an arm in each of the vessels containing wine, mead, ale, pigment, mulberry wine, and cider, sending a message to the king that when he came to his farm he would find plenty of salt meat, and that he would bring more with him. For this horrible crime, the king commanded him to be banished and outlawed.
In the twenty-fourth year of King Edward, the Northumbrians hearing these accounts expelled Tosti, their earl, who had caused much bloodshed and ruin among them.
Harold and Tostig fight in the presence of Edward and Godwine, as depicted in the, mid-13th century, verse 'Life' of St.Edward (Cambridge University Library MS. Ee.iii.59).
The latter part of this fable may well be derived from the massacre at Portskewett, carried out by Caradog ap Gruffudd (which Henry does not mention). The earlier part was adopted by Ailred of Rievaulx, in his 1163 'Life' of St.Edward. Ailred, however, shifted the incident to when Harold and Tostig were children. They have a fierce fight, at a banquet in front of the King and Godwine, in which Harold gets the best of Tostig. Edward then prophesies the fate of the brothers.
Henry of Huntingdon 'Historia Anglorum' translated by Thomas Forester