Ysgrifenna R. Goring Thomas at William Chambers ynghylch yr angen i gasglu tystiolaeth am yr ymosodiad diweddar ar ffermdy Gelliwernen, Llan-non, sef cartref John Edwards, asiant R. Goring Thomas.

Disgrifiad gan Evan D. Jones: 'Col. Trevor [Baron Dynevor] was of the opinion that as there seemed to be a prospect of getting further evidence (and the writer had seen J. Rees) the warrants should not issue until the result would be known. Edwards had made his deposition before Mr. Lewis of Stradey so that the warrant had better be issued by him and executed by the recipient's constables. Should Mr. Edwards think it necessary would he or Mr. Rees go with a guard to Gellywernen that night?'.

Ffynhonnell: Evan D. Jones, 'A File of "Rebecca" Papers', Trafodion Cymdeithas Efrydu Hynafiaeth a Natur yn Sir Gaerfyrddin, Cyf. I (3 & 4), 1943 & 1944, 30.