When Philip the Second was preparing his Armada for the conquest of England, he spared no pains to induce James of Scotland to favor his enterprise. Elizabeth, on her part, was not less active to secure the friendship of a neighbor, who, by opening or closing his ports, might do so much to assist or to counteract the projects of her enemy. James had the wisdom to see that it was not for his interest to ally himself with a power that sought the extinction of the faith which he professed, and the subjugation of a kingdom to which he was the heir. The Spanish overtures were rejected, and the great body of the people, warmly applauding the king's decision, entered into a combination to resist an attempt to land at any point on the Scottish coast. There was, nevertheless, a small party in Scotland which favoured the designs of Philip. At the head of this faction were the Catholic Earls of Huntly, Errol, and Angus. Even after the dispersion of the Armada, they kept up negotiations with the Prince of Parma and the King of Spain, in the hope of restoring the ancient religion, or at least of obtaining for themselves an equality of privileges with the Protestants. More than once were the leaders of this party committed to prison for overt acts of treason, and released by the clemency of the sovereign, but suffering as the Romanists did under the oppression of a fanatical majority, rebellion was their natural condition. After various acts of insubordination, continued for a series of years, it was proved beyond question that the Catholic earls had signed papers for an invasion of Britain by 30,000 foreigners. A Convention of Estates, summoned to consider the affair, finally determined that the three earls should be exempt from further inquiry on account of this conspiracy, but that before the first day of February, 1594, they should either renounce the errors of Popery, or remove from the kingdom. The Catholic leaders, relying on the number of their supporters, and not less on the inaccessible nature of the country in which their estates lay, scornfully rejected the choice proposed to them, renewed their connections with Spain, and were accordingly declared guilty of high treason and subjected to the doom of forfeiture. King James's exchequer was at this time so low that it was impossible for him to undertake the enforcing of this sentence in person. He was obliged to delegate the office to the young Earl of Argyle, who was induced to accept the appointment by the promise of a portion of Huntly's forfeited estates. The prospect of booty and the authority of the chief of the Campbells drew together six or seven thousand Highlanders, to whom were joined some hundreds of men from the Western Islands, under the chief of Maclean. With this body, one fourth of whom carried firelocks, while the rest were armed after the Gaelic fashion, Argyle descended from the hills towards Huntly's castle of Strathbogie.