At length, at the end of May, Buckingham came to an open quarrel with Olivares, and threatened to leave with the Prince at once and abandon the negotiation. This angry departure did not {107} suit the Spaniards; and, after much protest and entreaty on the part of Philip and Olivares, it was agreed that the Prince should stay in Madrid at least until King James was made acquainted with the point insisted upon, and sent his instructions; although, after having consented to remain, Charles, seeing the persistent attempts to put pressure upon him to marry at once on the Pope's conditions, endeavoured to withdraw his promise altogether and retire. Eventually, however, the cajolery of Olivares prevailed, and Cottington went off post haste to England, carrying with him the details of the Spanish papal demands. In the letter written by Charles and Buckingham to James, and taken by Cottington, they still express a hope that he may accede to the terms, though they dared not do so themselves without his consent. "Dear Dad and Gossip," this letter runs, "the Pope having written a courteous letter to me, your Baby, I have been bold to write to him an answer.... We make no doubt but to have the opinions of the busy divines reversed (for already the Count of Olivares hath put out ten of the worst), so that your Majesty will be pleased to begin to put in execution the favour towards your Roman Catholic subjects, and ye will be bound by your oath as soon as the Infanta comes over, which we hope you will do for the hastening of us home, with this protestation to reverse all, if there be any delay in the marriage. We send you here the articles as they are to go, the oaths, public and private, that you and your Baby are to {108} take, with the councils, wherein if you scare at the least clause of your private oath (where you promise that the Parliament shall revoke all penal laws against the Papists within three years), we thought good to tell your Majesty our opinion, which is that if you think you may do it in that time (which we think you may if you do your best), although it take not effect, you have not broken your word, for this promise is only security that you will do your best. The Spanish ambassador for respect of the Pope will present to you the articles as they came from Rome, as likewise to require that the delivery of the Infanta may be deferred till the spring.... We both humbly beg of your Majesty that you will confirm these articles soon, and press earnestly for our speedy return."[20] King James was in despair when he received this letter and Cottington's intelligence. Olivares had cleverly turned the whole negotiation on the acceptance by the English of the religious demands, and had remained quite unpledged as to the restoration of the Palatinate, which was the thing nearest to James' heart. The reply of the King is too characteristic for compression, and is here reproduced entire.