Harriet should be described as a widow on the certificate. If you are in the UK you could contact the Registrar at Cinderford to establish that it is the certificate you seek. Details are:
The Register Office,
Belle Vue Centre,
6 Belle Vue Road
Cinderford
GL14 2AB
Telephone 01594 822113

If you call by telephone then do so in the mornings only.

Best wishes
Mike