Ricky & Cas,
Sincere thanks for this information. My copy of the 1871 census was so faint it was almost impossible to read, although the first letter of her name did look like an H. This fits with other info I have, now all I have to find is a marriage between a Harriet May and ?? Davis either in Llantrissant, Glam. or Inkpen, Berks. about 1856/7.
Grannie