The sons of the dead Cunedda II were eight in number and the eldest of them was called Tybion. The Genealogies of the Princes tell us briefly that Tybion was killed in the north, and that the rest of the sons of Cunedda II came south to what is now our own country. By that brief entry, and in the story of what happened later, we can guess what happened. The law said that the eldest "efficient" man was to be elected. Gavran read that as meaning the man who could master the rest. By some treachery he killed Tybion and drove his brothers away, seizing the rule for himself. That which was a loss to the North was a gain to the South. Here, in what is now our own home, was a swordland for warriors to win fresh homes in. Doubtless the Sons of Gwron were none to pleased to see their cousins come down from the north and cut the leart out of the kingdom of their old foes, the Sons of Gloiuda. But the brothers of dead Tybion had need of a home, and with the steel they set to work to clear one.