That's the funny thing about 9th century history, it's not particularly well recorded, but invasions were pretty much all the same.There aren't much details about how catastrophic these invasions were to the Scots, that you keep harping about .
See it as payback for all the fun the Normans / English / Scots had in Ireland over 7 centuries. And Please stop referring to yourself as English. It's really embarrassing how far you take being a colonial apologist.
Payback, what about the payback for 12 centuries in Scotland? Stop referring to yourself as Indian Chinaman.