Ian, Have you got the White families which appear on the 1841-1901 Census? Do you have a particular family that you are looking for? Many of the miners from Nenthead, my g.grandfather included, went to Canada, logging, I am told. My g.grandfather came home to Nenthead but some stayed, my William Cousin was one (I would love to know if he has any family still living) and his sister, Mary Ann Cousin. My Mum says "they had something to do with jam factories"!! How do I find out about jam factories!! - Canada is a big place and I'm sure there would be more than one. If I can find any info on any White families I will get back in touch.
Regards, VeraT