Got Henry's birth certificate, and the mother's maiden name is Pound.
Thanks for all your help and suggestions ... we're on our way with another family line to research.
I'm totally out of my comfort zone here ... the counties I've been in so far have been Cambridgeshire, Suffolk, Essex, Huntingdonshire, Northamptonshire, Hertfordshire, Middlesex, Kent and Sussex. (Real Anglo-Saxon heritage there ...)
Gloucestershire and Wiltshire are new to me; so I guess I may need to come here for a bit more advice from time to time.