How about this from 1851 census?
Class: HO107; Piece: 2453; Folio: 21; Page: 2
Mile Road, Castletown, Marshfield, Monmouthshire
Trewarthen, William Head M 51 Police Constable b Truro, Cornwall
Trewarthen, Elizabeth Wife F 51 b Redruth, Cornwall
Trewarthen, Elizabeth Daughter F 20 Straw Bonnet Maker b Penzance, Cornwall
Trewaerthen, Lavinia Daughter F 18 Straw Bonnet Maker b Penzance
Trewarthen, William Son M 12 Scholar b Cardiff