Yn y llythyr hwn, mae Hannah Edwards yn adrodd hanes yr ymosodiad ar Gelliglyd gan ddilynwyr Rebecca. Mae hi hefyd yn rhybuddio eu bod yn bwriadu ymosod ar gatiau yr Hendy a Phontarddulais.

Adysgrif:
'Sir,
Mr. Davies Cefenybryn told my father this morning that the Rebeccaites had been at John Evans Gellyglyd's last night and have destroyed all he has besides what they have taken away we have also heard that they mean to break down Hendy and Pontardulais Gates tonight we thought it best to let you know as you can ...'