The three earliest Irish vitae are fun: Cogitosis's Brigit, Muirchu's Patrick, Adomnan's Columba . Don't forget this resource: cultofsaints.history.ox.ac.uk?page_id=144 (in which my own translation of the earliest Britsh text, a life of Alban(us), features...)
cultofsaints.history.ox.ac.uk
About the Database | The Cult of Saints
The Database At the centre of the project is a searchable database on which all the early evidence for the cult of the saints is being collected, whether in Armenian, Coptic, Georgian, Greek, Latin or...