Ancestry does have some details of Probate, or Administration, obtained for men by the name of Robert William Roberts.
Died on 23/08/1964, Robert William Roberts of Hillcrest, Griffiths Road, Coedpoeth, Bersham, Wrexham, Administration to Robert Roberts general builders foreman.
Died 19/10/1954, Robert William Roberts of Dunedin, of 6 Willoughby Road, Colwyn Bay, Probate to Jennie Roberts, widow.
Died 15/07/1943, Robert William Roberts of Carreglleon, Capel Garmon, Denbighshire, Administration to Hannah Roberts, widow and William Thomas Roberts, Farmer.
They don't show their ages when they died, or any date of birth.
The only thing that we can say for certain is that he would have died by now.
Helig