Since there is a fine Y Marker Project on Family Tree DNA for Pugh, if you have not supply your Y marker, you should, if you have then you have information to share with me and others.
My oldest known Pugh ancestor through my gr-gr-grandfather George H. Sowers, so I do not have the Pugh Y marker sample at my finger tips.
I would think this project could tell you the actual village in Merionethshire, Wales. I hope to receive my DNA sample from Living DNA which states they have samples from people living in Europe & GB. I hope this is the case. My own Mt DNA lines goes back to Wales. I do not know if the paper documentation exist in Wales for 1600's.
I can tell you others who have on their tree descends of the above couple I have a small DNA match. Your DNA sample filed with Ancestry I would think would show a lot more.