I called at Denbigh Archives a few weeks ago but despite help from the lovely staff I didn’t find anything new. I did, however, find an obit notice for Marjory Roberts that I’d forgotten about! It’s from 1855 and mentions her late husband and the fact that he was a decendent if the Goch’s of Betws and Penmachno. This ties in with notes I received from a now deceased cousin claiming the connection. I wonder if the farm name, Bryn Heilyn, is a reference to Heilyn?