Gildas' On the Ruin and Conquest of Britain is in Chronicles.
Gildas' On the Ruin and Conquest of Britain. The Works of Gildas covers 5th and 6th Century Briton. Translated from the Latin by J. A. Giles late Fellow of C. C. Coll. Oxford
Gildas' On the Ruin and Conquest of Britain J A Giles Preface
Works of Gildas Chapter I The Preface
Works of Gildas Chapter 2 The History