Llythyr a anfonwyd gan George Rice Trevor (Barwn Dinefwr) at William Chambers. Mae'n canmol Chambers am ddefnyddio grym i rwystro'r dorf rhag ymosod ar dref Llanelli a dywed y dylai gysylltu ag ef os hoffai gael cymorth milwrol i'w amddiffyn yn y dyfodol.

Disgrifiad gan Evan D. Jones:

'He had received the recipient's letter and had shown it to Colonel Love who believed that the force which Chambers had, judiciously employed, was sufficient to protect Llanelly from attack but the mob must not be allowed to enter the town. They had the authority of the Secretary of State to use armed force to stop the people coming in. If he should anticipate the want of more cavalry he would have to send to Carmarthen sufficiently early for them to reach him in a good state of service without tiring the horses in the march. He should send word to Colonel Love at what hour the demonstration was expected to take place.'

Ffynhonnell: Evan D. Jones, 'A File of "Rebecca" Papers', Trafodion Cymdeithas Efrydu Hynafiaeth a Natur yn Sir Gaerfyrddin, Cyf. I (3 & 4), 1943 & 1944, 34.