Owen Glendower (novel)  Owen Glendower: An Historical Novel by John Cowper Powys was first published in America in January 1941, and in the UK in February 1942. Powys returned to Britain from the USA in 1934, with his lover Phyllis Playter, living first in Dorchester, where he began work on his novel "Maiden Castle". However, in July, 1935, they moved to the village of Corwen, Denbighshire, North Wales, historically part of Edeirnion or Edeyrnion, an ancient commote of medieval Wales that was once part of the Kingdom of Powys; it was at Corwen that he completed "Maiden Castle" (1936). This move to the land of his ancestors led Powys to write "Owen Glendower" the first of two historical novels set in this region of Wales; the other was "" (1951). "Owen", Powys's ninth novel, reflects "his increasing sense of what he thought of as his bardic heritage." Powys has used Shakespeare's anglicised version of Owain Glyndŵr's name, "Owen Glendower" for the title of his novel. However, within the novel, he uses Owen Glyn Dŵr (sic) (most often just Owen). He also refers to Glyndŵr, as  "Owen ap Griffith" or "son of Griffith Fychan" (Welsh: Owain ap Gruffydd)  It is not surprising that John Cowper Powys should, after he moved to Corwen, decide to begin a novel about Owain Glyndŵr, because it was in Corwen that Owain's rebellion against Henry IV began on 16 September 1400. This was when he formally assumed the ancestral title of Prince of Powys at his manor house of Glyndyfrdwy, then in the parish of Corwen. But Powys first had to complete "Maiden Castle" (1936), which he did in February 1936. He then worked on his anti-vivisection book, "Morwyn" (1937), which was finished in January 1937. However, already in September 1935 Phyllis Playter has suggested that he should write a historical novel about Owain Glyndŵr. On 24 April 1937, in the Chapter House, Abbey of Valle Crucis, Powys began, "my Romance about Owen Glendower ".