Morgan Llwyd (1619-1659), the nephew of a professional soldier and magician, was a Roundhead, a millenialist, a chaplain in the army of Oliver Cromwell, and later a civil servant of the commonwealth in Wales. His famous religious allegory, A Book of Three Birds, is considered the most important Welsh book of the Seventeenth Century, and an enduring masterpiece of Welsh prose. With its introduction reflecting on the political turmoils...