On familysearch.org Surrey parish registers
I found a marriage between William Priddy and Hannah Mabey on 9th February 1827 at St Marys Church Rotherhithe
Both were single
Witnesses Charlotte Priddy and Henry Mabey
There is a burial of a William Priddy in Stepney in May of that year - May have been him.
Is this a clue or complete red herring

Census of 1861 RG 9/390/75/p 23
Living in Rotherhithe
Is this something to do with Hannah’s family a Mary Mabey B.1785 Lother Dorset I suspect this should read Loders which is a couple of miles from Bridport. She is with her son Henry ( born Rotherhithe) and his family