In reply to Neil Anderson:
In the spirit of the 'one stop shop', it's probably more helpful to add that info' here
http://www.ukclimbing.com/forums/t.php?t=568069&v=1
and Llewllyn= Llywelyn/Llewelyn
FFynon=Ffynon
LLyfant=Llyfant (Ff is one letter in Welsh, as is Ll, F'ing L!)
Pen Ole Wyn= Pen yr Ole Wen.
Post edited at 11:23