24.P.9., he writes on page 238: "sguirim go ttrasada ar Loch Mesg dam a ttigh Thaidgh Oig Ui Fhlaibhertaigh 1 die Aprilis 1651, Dauid Duigenan qui scripsit/I stop now, and I on Loch Mask in the house of Tadhg Og O Flaherty, April 1st, 1651, David Duigenan who wrote this."
A later entry specifies the place as Oileán Ruadh, or Red Island.
Peregrine O'Duignan, one of the four main responsible for compiling the book, was a kinsman of Dáibhídh's.
However, an idea proposed by the writer of this article that Dáibhídh was MacFhirbhisigh's mysterious amanuensis cannot be sustained, as a comparison of their handwriting bears no resemblance to each other.
Throughout his life, he transcribed such works as "Suibhne Gelt/The Frenzy of Sweeney", "The Adventures of the Two Idiot Saints", "The Battle of Magh Rath", and "The Banquet of Dun na Gedh.".