Thank you both for your help. I will go to the Museum again this week and check on the wills, to try and establish I have the correct branch/names.
I have an old photo of a grave stone in andreas which shows Robert died aged 82 years, also Esther (wife) cannot read most of the detail but assumed it was same as Andreas Burial 18 Sept 1877 Robert Corlett (iomfh andreas burial register 1645 - 1971).

I went by the 1881 census - William C 40 year old - baptism certificate I have says baptism 24 3 1839? - 2 years different.

Thanks again .