A Short Biographical Dictionary of English Literature/Gildas
Gildas (516?-570?).—British historian, was a monk who is believed to have gone to Brittany about 550, and founded a monastery. He wrote a history, De Excidio Britanniæ (concerning the overthrow of Britain). It consists of two parts, the first from the Roman invasion until the end of the 4th century, and the second a continuation to the writer's own time. It is obscure and wordy, and not of much value.