Gunn, W. Rev. (1819) Preface to "The 'Historia Brittonum,' commonly attributed to Nennius; from a manuscript lately discovered in the library of the Vatican Palace at Rome: edited in the tenth century, by Mark the Hermit; with an English version, fac-simile of the original, notes and illustrations". Reprinted in Giles, J.A. (1841) The Works of Gildas and Nennius, translated from the Latin James Bohn, London.

To the end of the title is sometimes added: "by the Rev. W.Gunn, B.D. Rector of Irstead, Norfolk 8vo, Lond. 1819".