He took up his residence in Leinster, and after a reign of fifteen years died, and was buried at _Ráith Beóthaigh_, in _Argat Ross_. This ancient rath still exists, and is now called Rath Beagh. It is situated on the right bank of the river Nore, near the present village of Ballyragget, county Kilkenny. This is not narrated by the Four Masters, neither do they mention the coming of the Cruithneans or Picts into Ireland. These occurrences, however, are recorded in all the ancient copies of the Book of Invasions, and in the Dinnseanchus. The Cruithneans or Picts are said to have fled from the oppression of their king in Thrace, and to have passed into Gaul. There they founded the city of Poictiers. From thence they were again driven by an act of tyranny, and they proceeded first to Britain, and then to Ireland. Crimhthann Sciath-bél, one of King Bremen's leaders, was at Wexford when the new colony landed. He was occupied in extirpating a tribe of Britons who had settled in Fotharta,[63] and were unpleasantly distinguished for fighting with poisoned weapons. The Irish chieftain asked the assistance of the new comers. A battle was fought, and the Britons were defeated principally by the skill of the Pictish druid, who found an antidote for the poison of their weapons. According to the quaint account of Bede,[64] the Celtic chiefs gave good advice to their foreign allies in return for their good deeds, and recommended them to settle in North Britain, adding that they would come to their assistance should they find any difficulty or opposition from the inhabitants. The Picts took the advice, but soon found themselves in want of helpmates. They applied again to their neighbours, and were obligingly supplied with wives on the condition "that, when any difficulty should arise, they should choose a king from the female royal race rather than from the male." The Picts accepted the terms and the ladies; "and the custom," says Bede, "as is well known, is observed among the Picts to this day."