The Physicians of Myddfai were very real people even if their mother was a legend (see my ‘Lady of the Lake’ blog). Welsh Herbal Medicine by David Hoffmann says “Rhiwallon and his sons first became physicians to Rhys Gryg who gave them rank, lands and privileges at Myddfai. Their fame soon spread and their services were in demand throughout the country. The descendants of this ancient family continued to practice medicine in Wales without a break until the middle of the 18th century, when the last lineal descendant died in 1743. The late Rice Williams M.D. of Aberystwyth, who died in  1842, appears to have been the last of the…