"When Edward and I," said he to the Saxon, "were living like brothers under the same roof, he promised, if ever he became king of England, to make me heir to his kingdom; I should very much like thee, Harold, to help me to realize this promise; and be assured that, if by thy aid I obtain the kingdom, whatsoever thou askest of me, I will grant it forthwith." Harold, in surprise and confusion, answered by an assent which he tried to make as vague as possible.

William took it as positive.

"Since thou dost consent to serve me," said he, "thou must engage to fortify the castle of Dover, dig a well of fresh water there, and put it into the hands of my men-at-arms; thou must also give me thy sister to be married to one of my barons, and thou must thyself espouse my daughter Adele." Harold, "not witting," says the chronicler, "how to escape from this pressing danger," promised all the duke asked of him, reckoning, doubt-less, on disregarding his engagement; and for the moment William asked him nothing more.
But a few days afterwards he summoned, at Avranches according to some, and at Bayeux according to others, and, more probably still, at Bonneville-sur-Touques, his Norman barons; and, in the midst of this assembly, at which Harold was present, William, seated with his naked sword in his hand, caused to be brought and placed upon a table covered with cloth of gold two reliquaries.

"Harold," said he, "I call upon thee, in presence of this noble assemblage, to confirm by oath the promises thou didst make me, to wit, to aid me to obtain the kingdom of England after the death of King Edward, to espouse my daughter Adele, and to send me thy sister to be married to one of my people." Harold, who had not expected this public summons, nevertheless did not hesitate any more than he had hesitated in his private conversation with William; he drew near, laid his hand on the two reliquaries, and swore to observe, to the best of his power, his agreement with the duke, should he live and God help.

"God help!" repeated those who were present.