Hi Br1gau,
Once again thanks for your thoughts on this family. With regards to Hugh's marriage cert, I have a copy of the original from Dolgellau registry office, but unfortunately he has left his father's name blank.
Hopefully I will be making a visit to the area late summer to take some photograph's and as to say pay my respects, as I have been told there is a very helpful lady that looks after the old church in Llangelynin. Perhaps she may have some records that may help. Not sure about Pennal though.
Cheers Retpara.