That people was driven by another. Behind us, in Twiskland, they fell into disputes, divided into two parties, and each went its own way. Of the one no account has come to us, but the other came in the back of our Schoonland, which was thinly inhabited, particularly the upper part. Therefore they were able to take possession of it without contest, and as they did no other harm, we would not make war about it. Now that we have learned to know them, we will describe their customs, and after that how matters went between us. They were not wild people, like most of Finda’s race; but, like the Egyptians, they have priests and also statues in their churches. The priests are the only rulers; they call themselves Magyars, and their headman Magy. He is high priest and king in one. The rest of the people are of no account, and in subjection to them. This people have not even a name; but we call them Finns,
It's 2 peoples who merged and then regrouped into 2 parties, the priestly caste control everyone. Nothing says they are one people who had always been Magy led.
One group may have come from the Urals area and been driven by another from further East, from shamanic yDNA N territory, who joined together on the way close to Germany, this is 100 years after the sinking of Aldland, plenty of time to establish new cultural changes.