In 1280 Scotland was not an occupied country - it was ruled by Alexander III, King of Scots. The film 'Braveheart' has a lot to answer for -
'This is most evident in the film 'Braveheart'. Not content with relying on Blind Harry's largely fictitious poem 'The Wallace' as the sole source of material, the writer, Randall Wallace, simply changed the story to suit a script that made no sort of historical sense and has, in fact, deprived Scottish people of part of their history by effectively undermining the factual material...If it is true that a picture paints a thousand words, how damaging is it when the picture is a fantasy?'
SOURCE: 'WILLIAM WALLACE: The True Story of Braveheart' by Chris Brown, page 125, ISBN 0-7524-3432-2.