Spinola was resolved to commence the war against the republic by some important exploit. He therefore laid siege to Berg-op-Zoom, a place of great consequence, commanding the navigation of the Meuse and the coasts of all the islands of Zealand. But Maurice, roused from the lethargy of despotism which seemed to have wholly changed his character, repaired to the scene of threatened danger; and succeeded, after a series of desperate efforts on both sides, to raise the siege, forcing Spinola to abandon his attempt with a loss of upward of twelve thousand men. Frederick Henry in the meantime had made an incursion into Brabant with a body of light troops; and ravaging the country up to the very gates of Mechlin, Louvain, and Brussels, levied contributions to the amount of six hundred thousand florins. The states completed this series of good fortune by obtaining the possession of West Friesland, by means of Count Mansfield, whom they had despatched thither at the head of his formidable army, and who had, in spite of the opposition of Count Tilly, successfully performed his mission.
We must now turn from these brief records of military affairs, the more pleasing theme for the historian of the Netherlands in comparison with domestic events, which claim attention but to create sensations of regret and censure. Prince Maurice had enjoyed without restraint the fruits of his ambitious daring. His power was uncontrolled and unopposed, but it was publicly odious; and private resentments were only withheld by fear, and, perhaps, in some measure by the moderation and patience which distinguished the disciples of Arminianism. In the midst, however, of the apparent calm, a deep conspiracy was formed against the life of the prince. The motives, the conduct, and the termination of this plot, excite feelings of many opposite kinds. We cannot, as in former instances, wholly execrate the design and approve the punishment. Commiseration is mingled with blame, when we mark the sons of Barneveldt, urged on by the excess of filial affection to avenge their venerable father’s fate; and despite our abhorrence for the object in view, we sympathize with the conspirators rather than the intended victim. William von Stoutenbourg and Renier de Groeneveld were the names of these two sons of the late pensionary. The latter was the younger; but, of more impetuous character than his brother, he was the principal in the plot. Instead of any efforts to soften down the hatred of this unfortunate family, these brothers had been removed from their employments, their property was confiscated, and despair soon urged them to desperation. In such a time of general discontent it was easy to find accomplices. Seven or eight determined men readily joined in the plot; of these, two were Catholics, the rest Arminians; the chief of whom was Henry Slatius, a preacher of considerable eloquence, talent, and energy. It was first proposed to attack the prince at Rotterdam;