Chookie, nothing you have said detracts from the fact that Robert le Bru was born a member of the Anglo-Norman artistocratic elite of England.
That's just a simple fact. Your need to spin this just illustrates the point I made when I first raised it - "don't tell the Scots this!".
Scots like to play fast and loose with national history (many others do to). I don't mind, just that I like to poke fun at them occasionally for it.