Hi Andrea
As far as I know Harold was 16yrs when he died, it is only something that my mother has told me, looked in the Durham miners thingey and got an approx date, I have looked in 1837 BMD found nothing. The only Harold B McKenzie I can find was born in portsea island Hampshire, the wrong mother and father.
His Fathers name is Frederick McKenzie and his Mother name was Elizabeth (No)maiden Name, I can not find their marrage! as far as I know they all lived in northumberland.
Chris