An envelope containing typescript of 'Sion Trevor, Llyfr arveu and Buchedd Sant Martin' (published in B.B.C.S.V), with two other typescripts (never published?) entitled 'Sion Trevor o Wigynt', in which E.J.J. attacks Sir Ifor Williams and defends the theory put forward in B.B.C.S.V.
Sion Trevor, Llyfr arveu and Buchedd Sant Martin
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- ReferenceGB 1239 305/19
- Dates of Creationn.d.
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