Found the following in 1881 census
RG11 Piece 5282 Folio 33 Page 13
67 Cowbridge Road, Llandaff, Glamorgan
Jacob Davies aged 40, a Grocer & coal inspector, born St Fagan, Glamorgan,
Margaret Davies aged 39 born Tonyrefail
Clara N Davies aged19 Music Teacher born Cardiff
Also present
Elizabeth Blackmore aged 20 domestic servant born Wellington Somerset