Ricky:
His second wife's name is Mary Isabel Bumby, so the 1871 Census you posted totally makes sense. And his son is Crossland, perhaps pointing to his mother's maiden name, as indicated on familysearch.
James and family emigrated to the USA in 1873, and I've found his passenger log and he's on the Montana State Census of 1880.
One other puzzle piece we have regards the Bumby family:
familysearch shows that Mary had a sibling named W.A., but passenger logs of their immigration don't show that name. Is there any way you could check the 1861 Census for the Bumby Family? Father should be William Bumby with wife Sarah. I am not sure of the county, but I assume it's Yorkshire...
Thanks!
Holly