The central point, however, of the real Norwegian power was the present capital, Dublin. This considerable city, which is said to contain at present more than three hundred thousand inhabitants, lies on both sides of the river Liffey, near the spot where it discharges itself into the Irish Channel. It is surrounded by a charming and fertile country. Anciently, however, and especially before the arrival of the Norwegians in Ireland, it seems to have been comparatively insignificant, both as regards extent and population. Yet even at that time it was, probably by means of its fortunate situation, and its connections with the neighbouring countries, the most important place in Ireland, which, at that early period, did not possess any very large towns. But as Dublin and its vicinity was at all events one of the most attractive points on the east coast of Ireland, some of the first Scandinavian kingdoms were founded there. About the middle of the ninth century a celebrated Norwegian Viking, Olaf the White, is said to have taken Dublin, and made himself king of the city and district. After the death of Olaf in a battle, two sons of King Harald Haarfager (Fair-hair), of Norway, arrived there, namely, Thorgils, called by the Irish Turges, and Frode; who, by means of the sword, likewise won for themselves thrones in Dublin. Subsequently to them, again, as the Irish chronicles relate, there landed three brothers, Olaf, Sigtryg, and Ivar, who became kings in Dublin, Waterford, and Limerick. From that time Norwegian kings reigned in those places, with but few interruptions, for full three centuries. There would certainly be some cause to doubt of so extensive a Norwegian dominion in a country so remote as Ireland, as well as of the actual existence of so striking a number of Scandinavian, and especially Norwegian, kings of cities, if the names of a great number of them were not preserved; and that, too, not so much in the chronicles of the Norwegians themselves, as in those of the conquered Irish, who had no reason to exaggerate in this respect. Several of the Norwegian kings mentioned in the Irish chronicles are, besides, mentioned in contemporary Anglo-Saxon and Scandinavian records; whence it becomes doubly probable that the remainder of the Norwegian kings mentioned by the Irish actually reigned in the places indicated.