Sorry but I can't find him on 1851

There's a birth of Thomas Corbitt in 1852 Haverfordwest so I wonder whether it was a baby who died in 1953. Thomas Henry Corbitt died 1853 Haverfordwest 11a 358
I found a John and Margret Corbett in 1851 at Whitechurch, St David's, H'west district
HO107 Piece 2479 / 145 Pg 8
Also Patrick and Mary Corbett in 1851 at Hubberston, Milford, H'west district
HO107 Piece 2477 /153 Pg 2
Kind Regards
Morgan