Places Mentioned in the First Branch, Fascinating website.
Bullfinch's Mythology, The Celts, section 8.
The Mabinogion, pp ix-xxxvi, 3-21, 227-232, Sioned Davies, Oxford, 2007, ISBN 978-0-19-283242
The Mabinogion, pp 9-41, 45-65, Jeffrey Gantz, Penguin, 1976, ISBN 0-14-044322-3
The Mabinogion, pp ix-xliv, 3-24, 275-278, Gwyn Jones & Thomas Jones, Dent & Dutton, 1977, ISBN 0-460-01097-2. Can also be found online at www.donaldcorrell.com
Pwyll Pendeuc Dyfed, Lady Charlotte Guest, Mary Jones
Pwyll, Prince of Dyfed, Lady Charlotte Guest, 1877, Sacred Texts
Notes to Pwyll, Prince of Dyfed, Lady Charlotte Guest, 1877, Sacred Texts
The Mabinogion, Lady Charlotte Guest, 1849, Project Gutenberg
The Mabinogi of Pwyll, W. M. Parker, mabiongi.net. Notes at mabinogion.info
'The Lord of Dyfed', from Legends of the Celts, p.134ff, Frank Delaney, HarperCollins, 1991, ISBN 0-586-21151-9
Tales from the Mabinogion, Gwyn Thomas & Kevin Crossley-Holland, Gollancz, 1984, ISBN 0-575-03531-5
Celtic Myths & Legends, p.147ff, Michael Foss, Selectabook Ltd., 1998, ISBN 0-75252-402-X
Prince of Annwn, Evangeline Walton, Del Rey, 1974, ISBN 0-345-27060-6
Encyclopaedia of Celtic Wisdom, p.117, 156, Caitlin & John Matthews, Element, 1994, ISBN 1-85230-560-6
The Celts, p.211, Frank Delaney, Grafton, 1989, ISBN 0-586-20349-4
Women in Celtic Myth, Moyra Caldecott, Arrow, ISBN 0-09-955920-X
Celtic Heritage, p.41 ff, Alwyn & Brinley Rees, Thames & Hudson, 1978, ISBN 978-0500110089
Pagan Celtic Britain, p.288, Anne Ross, Constable, 1967, ISBN 0-09-472330-3
'Myth in the Mabiogion', from A Celtic Reader, p.151, John Matthews, Aquarian, ISBN 0-85030-935-2
Celtic Myths and Legends, p.356 ff, T. W. Rolleston, 1995, ISBN 978-1859580066
Celtic Folklore: Welsh & Manx Vol.2, pp 499ff, John Rhys, Wildwood House, 1980, ISBN 0-7045-0406-5
The White Goddess, p.215ff, Robert Graves, Faber, 1952
http://www.maryjones.us/jce/eufyd.html, Hyfaidd Hen as one of the Children of Don.
Mabinogi Study: Enlivening Y Mabinogi, Welsh Pronounciation for the Mabinogi
And, of course, the Awen - inspiration and imagination!