I think I've found the William Curphey I want.
In the 1881 census at B Cottier House Andres Road. Born 1810 and a farmer.

His wife is "Isabel Curphy" born 1814 on the Island.

Can anyone help me over finding her maiden name?

I am hoping they are the parents of Catherine Curphey of whom I have the marriage certificate. She was married in Birkenhead, England, on January 28th 1845. Her age is simply "full" which I assume means "over 21". Her birth and death dates I have not yet found.

We will be on the Island next August so can do some looking up then but I am truly impatient!! Thanks in advance for any help or guidance anyone can offer.