The Caledonii might have been a pre-Celtic people, so was likely the Stone-henge builders..
What do you mean by "settle"??
And the Irish along the Welsh coast, the Scots in..Scotland(!), and the Jutes in Kent.
Never forget the Jutes..
And, not the least, NORWEGIAN Vikings, primarily in the North and West.
Even if you DO forget the Jutes (they were Danes, anyway), you have no right to forget the Norwegians!
There you did it again! You totally forgot the Norwegian Harald Hardrada..
Besides, since William the Conqueror was in direct descent from Rollo, a frenchif(r)ied version of
Rolv, a NORWEGIAN, the son of Ragnvald, Earl of Møre at the time of Harold Hairfair, Britain is Norwegian property.