It would be interesting to see how he lists himself on the marriage certificate - bachelor or widower?
I suspect Jane Barnfield and Jane Plaster are different:
In 1841, there are three teenagers on the Tetbury census:
Jane Barnfield, 13, living with William Barnfield and Weltham nee Bird at Frog Lane. Probably their granddaughter or niece, as they had an older daughter Jane who m. Enoch Hobbs and is on the 1841 census with him elsewhere in Gloucestershire
Milburn Mann, 16, living on Harper St. with his family.
Jane Plaster/Plaister, 15, living on Harper St. with her mother Eliza.
In 1843, Emma Jane Mann is born to Milburn and Jane Barnfield
In May 1845, a child Jane Plaister, illegitimate to Jane Plaister, is christened in Tetsbury (original of this would be interesting to see!)
On 29 June 1845, Jane Plaster and Milburn Mann marry. They were both 19.
There seems to be no marriage/death for Jane Barnfield in Tetsbury, nor any trace of the Jane Plaister/Plaster who was christened just before the marriage.
