Reason I asked ---- I have a birth record for a John Stephenson in Downham, Norfolk - right year, right mother's last name.
I also have a marriage record for a Thomas Stephenson to a Mary Ann Wilton (probably a transcription error where the tt looks like an lt) - in Downham, Norfolk, for 1845.
I also have another birth record for a John Stephenson, 1846, Downham, mother's last name Witton. (No death reg, but babies didn't always get both birth and death registered if they died same day/next day.)
I also have a birth record for Mary Stephenson, 1853, Dewsbury, Yorkshire West Riding, mother's last name Witton. (And that's as far as I have looked so far.)