The various fishery truces and conventions of Henry IV., which were made at a time when great insecurity prevailed on the sea and depredations were committed on all hands, reflect credit on that able monarch, and notwithstanding the naval weakness in the early part of his reign, they must have had a favourable influence in fostering the sea fisheries. The sort of treatment that fishermen in those times had frequently to undergo is indicated in a complaint made to the king in 1410 that, notwithstanding the fishery truce with France, the men of Harfleur had seized an English fishing vessel of twenty-four tons, _Le Cogge Johan de Briggewauter_, and had thrown the master and fourteen of the crew into prison, without food and water, and held them to ransom for a hundred pounds.[125] Such occurrences were by no means uncommon, and it was customary for fishing vessels to go to sea armed,[126]--a provision which also enabled them on occasion to do a little piracy on their own account. It was sometimes difficult for the authorities to decide whether a vessel provided with fishing-lines and armed, as some were, with “minions, falcons, and falconettes,” and having a good store of powder and bullets, had been equipped to catch fish or prey upon other vessels. It does not appear that any treaty concerning liberty of fishing was made in the warlike reign of Henry V. (1413-1422); but, as stated above, this king confirmed the Burgundy treaty in 1417. In the succeeding reign of Henry VI., in 1439, a treaty was concluded for three years with Isabel of Portugal, as representing her husband, Philip, Duke of Burgundy, which provided for liberty in fishing in much the same language as in the treaty of Henry IV. It was stipulated that all the fishermen of England, Ireland, or Calais, as well as of Brabant and Flanders, should be free to go all over the sea for fishing, without any hindrance or molestation on either side, and that they should have free access to the ports of either, under the usual conditions. Although the Duke of Burgundy was also Count of Holland and Zealand, these states were not specifically included in this treaty, which was renewed in 1442 for other five years, and again, at Calais, in 1446, for a term of twelve years, in precisely the same terms, and the commonalties of Ghent, Bruges, Ypres, and of the French dominions promised to observe it.[127] In the renewal of the treaty of intercourse at Brussels, in 1468, by Edward IV. and the Duchess of Burgundy on behalf of her husband, Duke Charles, in addition to the mention of Brabant, Flanders, and Mechlin, words were added[128] which brought Holland and Zealand into the treaty, and thus formally gave them that liberty of fishing on the British, or at least the English, coast which they struggled so hard and so successfully to retain in the seventeenth century. The article on the fishery also declared that the fishermen should be at liberty to fish without being required to