Couldn't find them but found this family of Webb of which one of the daughters was born in Kent.
Thought it might be of use to you
Joseph Webb Head 44 on superannuation list (civil serv)
b. Ringland , Dev
Agnes Webb Wife 36 Dressmaker b. Devonport
Mary Ann " Dau 11 b. St Margaretts, Kent
Eliza " Dau 7 b. Pralle, Dev
Elizabeth " Dau 3 "
Joseph " Son 2 "
Milton St, Brixham totnes, Devonshire
HO/107/1873 folio 196 page 22 film 0221021
I know its not what you wanted but could be connected
This is from the 1851 by the way.
All the best Angela.