Knighton's Chronicon

He referred to it as his "work in hand" that he wrote while at the Augustinian Abbey of Saint Mary de Pratis, associated with the House of Lancaster, where he was a canon.

But the latter two books are vital to the contemporary study of the period, since they were written by informed scholars who actually lived through the times they write about.

The Continuator's existence was first supposed by the nineteenth-century historian Walter Waddington Shirley, who noted a lengthy break in events described by the Chronicle, and concluded that the later section had been written by a different and unnamed author, commencing in 1377.

His division of the Chronicle's authorship was followed by later authors, with the result that the Continuator was referenced in subsequent historical study footnotes of learned historians that followed him.

[2] The existence of the Continuator was not questioned until 1957, when the historian Vivian Hunter Galbraith published an in-depth study of the Chronicle's chronology.