Early Kings of Norway by Thomas Carlyle

Eric's sons, four or five of them, with a Harald at the top, now at once got Norway in hand, all of it but Trondhjem, as king and under-kings; and made a severe time of it for those who had been, or seemed to be, their enemies. Excellent Jarl Sigurd, always so useful to Hakon and his country, was killed by them; and they came to repent that before very long. The slain Sigurd left a son, Hakon, as Jarl, who became famous in the northern world by and by. This Hakon, and him only, would the Trondhjemers accept as sovereign. "Death to him, then," said the sons of Eric, but only in secret, till they had got their hands free and were ready; which was not yet for some years. Nay, Hakon, when actually attacked, made good resistance, and threatened to cause trouble. Nor did he by any means get his death from these sons of Eric at this time, or till long afterwards at all, from one of their kin, as it chanced. On the contrary, he fled to Denmark now, and by and by managed to come back, to their cost.

Among their other chief victims were two cousins of their own, Tryggve and Gudrod, who had been honest under-kings to the late head-king, Hakon the Good; but were now become suspect, and had to fight for their lives, and lose them in a tragic manner. Tryggve had a son, whom we shall hear of. Gudrod, son of worthy Bjorn the Chapman, was grandfather of Saint Olaf, whom all men have heard of, -- who has a church in Southwark even, and another in Old Jewry, to this hour. In all these violences, Gunhild, widow of the late king Eric, was understood to have a principal hand. She had come back to Norway with her sons; and naturally passed for the secret adviser and Maternal President in whatever of violence went on; always reckoned a fell, vehement, relentless personage where her own interests were concerned. Probably as things settled, her influence on affairs grew less. At least one hopes so; and, in the Sagas, hears less and less of her, and before long nothing.