I have quite a bit on the Kew families (though gleaned heavily from the IGI and personal communications, so may be rather dodgy).
James Kew was the son of John Kew and Lucy Rivers of Sherborne St John, Hampshire, England. I've been told that the village raised the money for their tickets to Canada!
John Kew's sister Mary emigrated with her husband and family to New Zealand and is my husband's 3xgreat grandmother.
I can send you a gedcom if you like.