Northumbria, 718 AD “Brida, if we’re nice to these Danes and welcome them, maybe we’ll all get along.”
Having been there and done that, you’d think the Saxons would know better,
And it still took 300 years before they cleaned house of the Danes.
https://en.wikipedia.org/wiki/St._Brice%27s_Day_massacre
Just pay the Dane-geld and they'll be nice....really....trust me.