A Letter for Thomas Hoccleve?

Sobecki discusses a letter sent by John Offord on June 6, 1420 from the siege of Sens to an anonymous recipient in England. The original no longer survives; it was once probably contained in British Library, MS Cotton Caligula D. v. The manuscript was among those badly damaged by the fire of 1731 in Ashburnham House, where the Cotton Library was then located. Many folios in MS Cotton Caligula D. v. have survived, but all of them display burn marks around all four edges. However, Thomas Rymer transcribed and printed the letter in his Foedera. Occasionally, this letter is referenced in treatments of Henry's marriage, Anglo-French relations in Paris, and the minutiae of the ensuing military campaign against the Dauphinist faction.