Sandpiper is right and Habj, too. There is definitely an error in the text concerned. It should read "Knut Tordsson (Bonde)" if using the names in Swedish. Neither Carl, son of Canute, nor his father Canute, son of Tord (no English version of that one is known to me), ever used the Bonde surname. It became a surname, and that of one of Sweden's longest living "noble" families (still going strong) around the end of the 16th century. Only the nobility started using surnames then. NO ONE (excuse me for shouting) had any surnames until then in Sweden, though some regular soldiers had nicknames to distinguish them from all the other Anders Anderssons. 80% of the population had no surnames at all, other than new patromymics inherited every generation, until they began adopting them in the 1880's. Women had no legal names at all until 1901. Oh, by the way, "scholarly convention" in this case means an attempted bluff for the sake of argument, but nothing factual whatsoever.