To Ireland the Norsemen had been attracted at a comparatively early period. In the last decade of the eighth century they destroyed the monastery of Iona or Icolmkill, and between the years 810 and 830 they spread terror and devastation along the entire coast. In the year 838 they sailed with one hundred and twenty ships up to Dublin and conquered the city, under the leadership of Thorgisl, who still lives in Irish song and story under the names of Turges and Turgesius. "After many sharp fights," says an old author,[A] "he conquered in a short time all Ireland, and erected, wherever he went, high fortifications of masonry with deep moats, of which many ruins are yet to be seen in the country." At last he fell in love with the daughter of Maelsechnail, king in Meath, and demanded of him that he should send her to him, attended by fifteen young maidens. Thorgisl promised to meet her with the same number of high-born Norsemen on an island in Loch Erne. But instead of maidens Maelsechnail sent fifteen beardless young men, disguised as women and armed with daggers. When Thorgisl arrived he was attacked by these and slain. On a previous occasion Maelsechnail had asked Thorgisl what he should do to get rid of some strange and injurious birds that had got into the country. "Destroy their nests," said Thorgisl. Accordingly Maelsechnail began at once to destroy the Norse castles, while the Irish slew or chased away the Norsemen. [Footnote A: Giraldus Cambrensis, _De Topogr. Hiberniæ_, cap. 37. Quoted from Munch, 1-438.] [Illustration: BUCKLE FROM THE IRON AGE.] It appears probable that Thorgisl's reign in Ireland lasted from 838 to 846, although a much longer period is given by the above-quoted chronicler. A more enduring sway over the country was gained by the Norse sea-king Olaf the White, who belonged to the great Yngling race. In 852 a company of Danish vikings had possession of Dublin; but Olaf defeated them and compelled them to send him hostages. He then established himself in the city, built castles, and taxed the surrounding country. Two other Norsemen, the brothers Sigtrygg and Ivar, founded about the same time kingdoms--the former in Waterford, the latter in Limerick--without, however, being able to compete with Olaf in splendor and power. The dominion of the Norsemen in Dublin is said to have lasted for three hundred and fifty years. From Irish sources a somewhat different account is derived of these remarkable events. It is told that the Norsemen often sailed up the rivers, not as warriors, but as peaceful merchants, and that the Irish found it advantageous to trade with them. They thus gained considerable possessions in the cities, and when the vikings came there was already a party in the larger cities who favored them and made their conquests easy.