“Assent,” whispered Marguerite. “We will soon find means to liberate the princes.”

“Well, sire, I must perforce agree,” said François.

“One point only remains,” said the Emperor. “I would willingly have kept it separate, but circumstances require that it should form part of the treaty. It relates to my sister Leanor, the widowed queen of Portugal.”

“Yes, sire, and I now renew the proposal I have made to you respecting the queen,” said François. “Do you agree to give me her hand?”

“Sire,” interposed Bourbon, haughtily, “you have already promised your sister to me.”

“Before giving that promise I ought to have consulted her,” said Charles.

“You would have me to understand that she declines the alliance,” said Bourbon.

“The queen could scarce hesitate between a proscribed prince and a powerful monarch,” said Marguerite, in a tone that stung Bourbon to the quick.

“You mistake, madame,” he cried, sharply. “'Tis the prince who is powerful, and the king a prisoner. However, I relinquish my claim. Your Imperial Majesty is free to bestow the queen your sister on whomsoever you list.”

“Then, brother, she is yours,” said the Emperor to François; “and I may now tell you frankly that your chivalrous qualities have won her admiration, and that she can give you her heart as well as her hand. The alliance, I trust, will form a lasting bond of amity between us. By the terms of the treaty you are bound to cede Burgundy to me. I am willing that you should settle the duchy upon my sister, to revert to me in default of issue by the marriage.”