update : details from wedding cert.
William BATCHELOR (also found spelt as BACHELOR ) son of William BACHELOR : Farmer
Charlotte BELCHER daughter of William BELCHER : Shoemaker.
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As best I can trace, it looks like William BATCHELOR was born around 1827 : I believe him to be son of William BACHELOR and Mary TOLLY, though as yet no baptism found to support. (see below)
I have found him recorded 1841 census as William BATCHELOR born in county. Then later, as William HASTINGS, a Baker, in the 1851 census, living with his widowed mother and some siblings in Hemel Hempstead.
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Whereas Charlotte BELCHER was daughter of William BELCHER and Harriet COOK, baptised 1829 in Hemel Hempstead.
She is found 1841 census born in county, living with with her parents and later in 1851, still with parents and shown as a plaiter (straw probably).
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Other researchers have shown that Mary TOLLY had first been married to a Richard HASTINGS and was then a widow, at the time of her marriage to William BATCHELOR in November 1828 in Chelsea, London.
Which might suggest the HASTINGS surname in the 1851 census, but clearly was not reflected in the 1851 Marriage Banns or 1852 Marriage Registration.
Brian E