Anthony, T.J. Capel Berllandywyll, Myddfai, Sir Caerfyrddin, London, (1908).
James, David B. Parish profile - Myddfai, Carmarthenshire. Dyfed Family History Journal 2/2 (1985), p. 49-51
James, David B. Myddfai: its land and peoples. Bow Street: David B. James, 1991. 278p: ill (some col), maps; 31cm. [ISBN 0951747002. Here is a name index and also extracts of data from the book
Lloyd, Sir John E., (Ed.). A History of Carmarthenshire (2 vols.), Cardiff, London Carmarthenshire Society (1935, 1939). Extracts from this book can be accessed on some parish pages, see here for this parish.
Pughe, John, and Williams, John, Ab Ithel. The Physicians of Myddvai: or, The medical practice of the celebrated Rhiwallon and his sons, of Myddfai, in Caermarthenshire .... (Facsimile ed.) Felinfach: Llanerch, 1993. xxx, 470 [i.e.430]p: ill; 21cm. Original ed: Llandovery: D.J. Roderic; London, Longman & Co, 1861 [Published for The Welsh Mss Society]. Includes index. [ISBN 1897853157 (pbk)]
Rowlands, J. Legend of Myddfai. In Historical Notes of the Counties of Glamorgan, Carmarthen, & Cardigan, and a list of the Members of Parliament for South Wales, from Henry VIII, to Charles II., Cardiff, Hugh Bird (1866), p40.
Williams Ab Ithel, J. Meddygon Myddfai, Felinfach, Llanerch (1993) 298 p. [ISBN: 1897853122 (pbk)] [Facsim. reprint of ed published: Llandovery: D.J. Roderic, 1861]