This is one Hampton posting I Will get involved in now that I have had a bit of a look at things.
IGI definitely shows a baptism at Ludgvan 28th January 1844 for Edward s/o Ralph and Elinor Hampton.
1851 Census
Crift Cottage, MENHENIOT
Ralph Hampton, head, mar, 40, lead miner, Cornwall, Gwinyer
Helener, wife, mar, 41, Cornwall, Gwinyer
Jane, daur, mar, 20, Cornwall, Gwinyer
Mary A, daur, unm, 18, lead ore sorter, Cornwall, Gwinyer
Elizabeth, daur, unm, 16, lead ore sorter, Cornwall, St Tiller
Thomas, son, unm, 15, lead ore sorter, Cornwall, St Tiller
Ralph, son, unm, 13, lead ore sorter, Cornwall, St Tiller
Caroline, daur, unm, 12, lead ore sorter, Cornwall, St Tiller
Ellen, daur, unm, 10, Cornwall, St Tiller
Edward, son, unm, 7, Cornwall, Ludyan
Susan, daur, unm, 5, Cornwall, Ludyan
Dorothy, daur, unm, 3, Cornwall, St Neot
Arriet, daur, unm, 1, Cornwall, St Neot
1861 Census, Crift Cottage, Menheniot
Ralph Hampton, head, widr., 51, miner, Cornwall n.k.
Thomas, son, unm, 25, miner, Cornwall n.k.
Caroline, daur, unm, 21, housekeeper, Cornwall n.k.
Edward, son, unm, 16, miner, Cornwall n.k.
Susan, daur, unm, 15, mine girl, n.k.
Harriet, daur, unm, 11, scholar, St Neot
Elizabeth, daur, unm, 9, scholar, Menheniot
Dorothy, daur, unm, 13, mine girl, Cornwall n.k.
Looks like Dorothy was a little late home on this occasion and almost forgotten.
Looking at this suggests that the 'Ludgvan' thing was a one off.
My first thoughts were, given the mentions of Menheniot, St Neot etc, that the actual Parish of Birth/Baptism may have been Luxulyan.
The IGI entry has thrown that out but would still require checking against an original record.
If 'GWINYER' is actually 'GWINEAR' the IGI has this to offer:-
Ralph s/o Thomas and Mary Hampton bp. Gwinear 4th December 1808
That might be of some help. ;D
Right now I have to get some of my casserole and another beer into me before bed and then get up for work again.
Will check some other postings whilst that is happening. ;D