Again Spain made unavailing protest. Henry of Bourbon still bore the title of king of Navarre, though the kingdom had been lost to the house long before his birth and was, in fact, entirely in the possession of Spain. Her fear was lest the new bond of marriage might unite the parties of France in war for the acquisition of Navarre. It was in vain, however, that Spain sought to prey upon the fears of Charles IX, endeavoring to excite the King’s jealousy against the growing power of the house of Bourbon and pointing out that of the twelve provinces of the kingdom ten were in the hands of governors who were bound by blood or interest to the Bourbons.[1512] So eager were many of the gentry of France for war with Spain, either in Navarre or Flanders, that one of Coligny’s officers, when asked whether France meant to lose the favorable opportunity of attacking Spain, scornfully rejoined, “What can we do? We are good for nothing, for we have to deal with a scared King and a timid queen, who will not come to any decision.” By December, 1571, war with Spain was on every lip and the government began to collect money.[1513] At this juncture, when all Europe was keyed to concert pitch of political tension, when anything seemed likely to happen and no one of the great powers dared make an overt move, the Gordian knot was cut. On April 1, 1572, the most notable event in the Low Countries since the iconoclastic outburst occurred. For on that day the count van der Marck, commander of the Beggars of the Sea, captured the port of Brille. From that time onward the Dutch and Flemings had a maritime point of their own on the mainland and were no longer dependent on the precarious shelter of English and Norman ports. The effect of this blow to Spain was great. Within the week—on Easter Day—Flushing, and soon afterward Middelburg, rebelled against the billeting of Spanish troops sent by Alva to replace the Walloon garrison there.[1514] The Gueux were masters of the sea and when Dordrecht also rebelled, the inland water routes were endangered too. No vessel could come from Holland, Guelders, or Frisia and no communication could be made from the north with Brabant. Even Amsterdam could be starved and Alva determined to retire all his forces to Ghent and Antwerp.[1515] On April 14 William of Orange issued a proclamation from Dillenburg expressing his grief at the miseries suffered from the exactions, outrages, and cruelties inflicted by the Spaniards, and assured the people of his determination to liberate the land from their tyranny. As many towns and ports had already recognized him as their ruler, he urged others to follow their example, pledging his word to use all his power to restore the ancient privileges and liberties of each.[1516] When news of these wondrous deeds reached France, Charles IX’s hesitation was swept away by the combined fervor of Louis of Nassau and the admiral. On April 19, the Anglo-French treaty of alliance was signed at Blois.[1517]