There is an Oliver Duxbury who marries Ann Kay 10 Jun 1844 at St Peter, Bolton, both giving their abode as Entwistle, and his father is Roger Duxbury, labourer. On the 1851 census Oliver is 29, born Over Darwen. So he could belong to Roger and Alice, but he wouldn't be one of the three missing ones before Susanna. There is another Roger having children at the same time as my Roger, though, with a wife Jane, and Oliver's eldest daughter is Jane so maybe he is not one of mine.
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