Nennius (or, variously: Ninnius; Nemnius**) reveals himself as a possible author of the Historia in a prologue in some of the copies still in existence. He notes that he is a pupil of Elvodug (Elffodw). The Welsh Annals (Annales Cambriae: see Other Works) note Elvodug twice: in 768 CE he was responsible for ensuring the date of Easter was correctly calculated in Wales, and his death is noted in 809 CE. This gives us a rough time for Nennius to have lived. There is an additional work (Oxford, Bodleian Library Auct. F.4.32 (S.C.2176) fo.20^r) from 817 CE* by a Nennius, which is an alphabet parodying English runes, made up to refute an English (i.e. ~Saxon) scholar who suggested the British (i.e.~Welsh) had no alphabet of their own*. Further details on this can be found in Robert Vermaat's excellent summary at Vortigern Studies. On the basis of the above, and the manuscript dates¹, classical suggestions that the writer is the Nennius mentioned in Geoffrey of Monmouth's Historia Regum Britanniae (i.17+) (Other Works) have largely been abandoned.