Author:Robert Williams (1863-1938)

Works

 * Y Mabinogion (Everyman's library). Gol. gan R. Williams. Dent, h.d.

Works about Williams

 * Davies, Ben Robert Williams. DYSG (1955) t. 206-9.
 * Jenkins, Ayron Yr Hybarch Robert Williams (1939) t. 8-12.
 * Jones, D. S. Er cof am yr Hyrbarch Robert Williams (1939) t. 13-14.