He began by choosing a wife from the family of his direst enemy; for he married Lucinetta Spinola. The marriage, so far as the records tell, was fortunate and Lucinetta bore him six children. The great purpose of his life was to make Monaco a naval power and in this aim he succeeded, for by his indomitable energy he raised the Monégasque fleet to a position of high rank not only in the Mediterranean but in the remoter waters of Europe. Although the harbour at his command was small he was able, on one occasion, to collect a fleet of no fewer than thirty galleys and a force of ten thousand men-at-arms. He devoted his fleet, in the first instance, to advance the prestige of Monaco, to consolidate his territory and to expand his commerce. When these needs were satisfied he went further afield. He was a free lance and was prepared to offer his services to any prince who was in need of help and was prepared to pay liberally for his assistance. Indeed when any war, large or small, was impending it was desirable, as a preliminary, to secure the strong arm of Charles the Seaman. He was indifferent as to the merits of the quarrel or as to the side on which he served so long as he saw his way to make a good thing out of it. He began his fighting career in a quite modest fashion in the year 1331. The Catalans, being unfortunately not aware of the character of the Lord of Monaco, had the audacity to make a blundering attack upon that citadel. Carlo fell upon them, scattered them, drove them back panic-stricken and, dashing after them, sacked their town of Barcelona as a warning not to meddle with the Grimaldi again. Having a fine fleet and a period of leisure he now turned his forces against his old enemies, the Genoese, harried them without mercy and blockaded their city. He was doing well and likely to do better when war broke out between France and England, between Philip of Valois on one side and Edward III on the other. Philip at once sent to Monaco to beg the help—on terms—of Carlo against the English. The invitation was too attractive to be ignored; so the fleet of Monaco turned westward and set sail for the remote and almost unknown island of England. It was a venture of no little peril. The Gulf of Lyons and the Bay of Biscay are not to the liking of seamen even at the present day, and to cross these wastes of water in mere galleys was a venture that needed a stout heart—such a heart as that of Carlo Grimaldi. The Monégasque fleet, having joined with that of France, came up with the English off the Channel Islands. A sea battle followed in which Carlo and the French, aided very opportunely by a storm, defeated the naval forces of England. This was in the year 1343. Charles the Seaman gained from this expedition not only glory but profit; for he received from Philip a very substantial recompense in money as well as certain rights to trade in the Mediterranean which brought considerable additions to his treasury.