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Manx Genealogy Archive 1

Family of Arthur Moore

I have a little bit of information about Arthur Moore's family but I'm looking for the reason's why his sons'(Alfred, Garnett, and Walter) were sent to an orphange and later to Canada.
The records I have and the ones I have found list Mary Ann Shimmin as his Mother. But one document I looked into said the reason Alfred was sent into the orphange was because his mother was dead and his father remarried. Does anyone know if Mary Ann was his mother or not?
Thanks Sara