Mull, I was in the Archives today and found this out about Pierce Jones but I think that this may relate to Pierce Jones' son also called Pierce Jones but known as Percy for some reason. His future wife was living at 29 Jubilee Street and that's where they lived when they got married and we had a quick look at the house when you were here last year.
CG3 - Conwy Union Records
Cyfernod / Ref No CG3/907
Teitl / Title SUPERINTENDENT REGISTRAR'S CERTIFICATE FOR MARRIAGE WITHOUT LICENCE
Ddisgrifiad / Description re Pierce Jones, plasterer of Severn Cottage, Back Augusta Street, Llandudno and Harriet Owen of 29 Jubilee Street, Eglwysrhos
Dyddiad / Date 1905 Jan 3
Graddau / Extent 1 item
Lefel / Level Item
The catalogues are now online and you can search for them by going into the Conwy County Borough Council website.
Click on search, then put in Conwy Archives and send it.
Then click on Online catalogue, click on Go and then put "Pierce Jones" in search and then click on it.
You'll see the above there but go through each one and in particular No's 8 & 9, I wonder if that's your Pierce but I'll leave that up to you to search for the answer.
Hope that everything goes well with the operation on your eye next month