Myddfai is a small village in Carmarthenshire, Wales. It is famous for being the setting for many popular myths such as "the Lady of the Lake" and for being the home of the Physicians of Myddfai. 

In "Real Wales" it is mentioned along with several other places in Wales. 

"Wales that might as well be England, including the capital and the north east and the southern coasts; and Y Fro Efallai where desire and actuality mix, where reality comes in like a short wave signal - Myddfai, Banwen, Merthyr, Pontcanna, Aber out of term time. Trefdraeth when the sun shines. Who is to say that his Wales is any better than mine? Or that mine is more real?"