Evans above- glazing Neath

Just a plea for any information on William Evans, plumber and glazier, Wind Street, Neath.  He was there in 1811, 1822 and quite possibly some time after this.  He was born 1770-1790 so most likely dead by 1841 census.  His wife Mary (Rees/Morton?) was the niece of Elizabeth (Rees) Pengilly, wife of Thomas Pengilly, Superintendent of the Neath-Abbey Iron-Works.

Pengilly died in 1822 and his widow three years later leaving a few pounds to niece Mary Evans.

The death duty registers show that Mary was the daughter of Elizabeth's sister, and my money is on her being the daughter of David and Ann (Rees) Morton of Neath or Cadoxton.

I descend from David Morton of Merthyr Tydfil who was either Mary's cousin or her brother.