But at last, seeing themselves under an absolute Necessity of acquainting the _Spanish_ Minister with their Design, without which all their Measures would infallibly be broken; they cast their Eyes upon a rich Merchant of _Lisbon_, who was Treasurer of the Custom-House, and who, by reason of his great Trade, had the King's immediate leave to send Letters into _Castile_ at any time. This Man's Name was _Baeze_; he outwardly profess'd the Christian Religion, but was suppos'd to be a conceal'd Observer of the _Jewish_ Law. To him they offer'd vast Sums of Money for his Assistance; which, together with the Persuasions of the _Jews_ who were engag'd in the Conspiracy, prevail'd upon him so far, that he promis'd to take care that their Letters should be deliver'd to the Duke _d'Olivarez_. To this end he enclos'd the Pacquet directed to the Marquiss _Daiamonti_, Governour of the first Town on the Frontiers of _Spain_, believing his Letters safe, when once out of the Dominions of _Portugal_. The Marquiss, who was nearly related to the Queen, and was at that time negotiating a Business for the King of _Portugal_, was very much surpriz'd to see Letters seal'd with the Great Seal of the Inquisition, and directed to the first Minister of _Spain_; and beginning to fear that his own Business was discover'd, and notice of it hereby given to _Olivarez_, he open'd them, and found that they contain'd the Scheme of a Conspiracy against the Royal Family, and which was speedily to be put in execution. Startled at the Contents, he dispatch'd a Courier to the Court of _Portugal_ with the intercepted Letters. It is impossible to express the Surprize of the King, when he saw that three Princes, who were so nearly related to him, with the Archbishop, and several Grandees of the Kingdom, were contriving how to take away his Life, and give his Crown to a Stranger. He immediately communicated their intended Treason to his Privy-Council, who after a small Deliberation came to a Resolution, which some few days afterwards was executed. The fifth of _October_ was the Day appointed by the Conspirators, and the Time Eleven at Night. That very Morning, about Ten of the Clock, all the Soldiers who were quarter'd in the neighbouring Villages, march'd into _Lisbon_, it having been given out that they were then to be review'd in the Court of the Palace. The King at the same time gave Notes with his own hand to several Officers and others of his Court, which were seal'd up, with positive Orders not to open them till Twelve, and then punctually to execute the Contents.