Thank you very much
I am waiting for a family connection to email me, I believe they have names for William's children which I can then check against what you have found.
I, too, believe he may have married as plain William but his death is under William C. Barrett.
I had a 3 hour meeting with a 3rd cousin and his family last Saturday and we know there may be surviving descendants in the Rhymney Valley. There are certain family connections in the Rhondda
My 1911 census subscription has just expired, bills have to be paid first before thinking of renewal to confirm those records pre 1911 , but there is a William C. Barrett listed under Bedwellty and married by 1911.
Thank you again for your effort