[3] His grandfather, Huw Llwyd, was a professional soldier and noted Welsh-language poet, and also had a reputation as an astrologer and magician.
In addition to this, the Raven and the Dove are compared with the Raven and Dove sent out from Noah's Ark to search for dry land, and history is represented as a hiatus between the divine judgement given in the Genesis flood narrative, and the Last Judgement, which Morgan Llwyd expects very shortly.
Morgan Llwyd's three shorter Welsh-language prose works are Llythyr i'r Cymry Cariadus, Gwaedd yng Nghymru yn Wyneb pob Cynwybod and Cyfarwydd i'r Cymru, in which he stresses the urgent need of his readers for a personal reconciliation with God.
deal with theological matters, while An Honest Discourse Between Three Neighbours explores differing attitudes to Oliver Cromwell's rule.
In an interview with Saunders Lewis, the short-story writer John Gwilym Jones speaks of his "immense" artistic debt to Llythyr i'r Cymry Cariadus and Llyfr y Tri Aderyn, whose style he studied closely and sought to imitate, while M. Wynn Thomas, in his monograph Morgan Llwyd, explores the poetic and imaginative richness of his prose as a tool for expressing his intensely mystical religious vision.