There is also the problem of the meaning of language changing with time. In the lovely song Gathering Rushes the angry father shouts at his unmarried pregnant daughter:-
Oh! Was it by a black man or was it by a brown?
which in current parlance has a racist bent, but in the Edinburgh of my boyhood a black man, a brown man or a fair or blond man referred to the colour of their hair; in fact in 1950s Edinburgh I don't remember seeing any brown or black skinned people. I am sure that is what this implies.
My wife, Tina sings this song and has altered this line to:-
Oh! Was it by a black-haired man or was it by a brown?