For example in wiki i found this;
According to wiki this was mentioned in Origin of the Anglo-Saxon Race – A Study of the Settlement of England and the Tribal Origin of the Old English People by Thomas William Shore. I wonder where he got that information. I mean what a hell? Do you think this is true? Is there any serious proof?
Need first to see what source he is citing, but it is absolutley possible. Polabians were Danish allies, espetialy those from island of Rujan.