About the end of the 9th century, one of the sons of Rognwald, count of the Orcades, named Horolf, or Rollo, having infested the coasts of Norway with piratical descents, was at length defeated and banished by Harold, king of Denmark. He fled for safety to the Scandinavian island of Soderoe, where finding many outlaws and discontented fugitives, he addressed their passions, and succeeded in placing himself at their head. Instead of measuring his sword with his sovereign again, he adopted the wiser policy of imitating his countrymen, in making his fortune by plundering the more opulent places of southern Europe. The first attempt of this powerful gang was upon England, where, finding Alfred too powerful to be coped with, he stood over to the mouth of the Seine, and availed himself of the state to which France was reduced. Horolf, however, did not limit his ambition to the acquisition of booty; he wished permanently to enjoy some of the fine countries he was ravaging, and after many treaties made and broken, received the dutchy of Normandy from the lands of Charles the Simple, as a fief, together with Gisla, the daughter of the French monarch, in marriage. Thus did a mere pirate found the family which in a few years gave sovereigns to England, Naples, and Sicily, and spread the fame of their talents and prowess throughout the world. Nor was Europe open to the depredations of the northern pirates only. Some Asiatic moslems, having seized on Syria, immediately invaded Africa, and their subsequent conquests in Spain facilitated their irruption into France, where they pillaged the devoted country, with but few substantial checks. Masters of all the islands in the Mediterranean, their corsairs insulted the coasts of Italy, and even threatened the destruction of the Eastern empire. While Alexis was occupied in a war with Patzinaces, on the banks of the Danube, Zachas, a Saracen pirate, scoured the Archipelago, having, with the assistance of an able Smyrniote, constructed a flotilla of forty brigantines, and some light fast-rowing boats, manned by adventurers like himself. After taking several of the surrounding islands, he established himself sovereign of Smyrna, that place being about the centre of his newly-acquired dominions. Here his fortunes prospered for a time, and Soliman, sultan of Nicea, son of the grand Soliman, sought his alliance, and married his daughter, about AD. 1093. But in the following year, young Soliman being persuaded that his father-in-law had an eye to his possessions, with his own hand stabbed Zachas to the heart. The success of this freebooter shows that the Eastern emperors could no longer protect, or even assist, their islands.