I suspect most mystery fans know Phillpotts, if they know him, for his having encouraged a young Torquay neighbor, Agatha Christie, with her writing career. When a hugely successful writer herself, Agatha Christie retained fondness for the older author who had given her youthful writing promising words of praise. When Phillpotts died in 1960, at the advanced age of 98, Christie penned an affectionate obituary of him, singling out for praise his children's novel The Flint Heart (1910), recently reprinted in a fine new edition.
Eden Phillpotts was an extraordinarily prolific author, authoring by my count over 250 books, ten percent of which were crime and detective novels. His last novel (not a mystery) was published in 1959, just a year before he died. Overall he is probably most admired, as a writer, as Devon regional novelist, though his contribution to mystery fiction is, I believe, notable. I have written about Phillpotts' career in crime fiction here.
Earlier in life Eden Phillpotts had married Emily Topham and with her had two children, a son, Henry (1895-1976) and a daughter, Mary Adelaide Eden (1896-1993), who grew up to be an able writer in her own right and who lived nearly as long as her very long-lived father.
Eden Phillpotts was also prominent as a playwright--his hit rustic comedy play The Farmer's Wife was filmed by Alfred Hitchcock in 1928--and he and Adelaide collaborated on several plays, the best-known of which was Yellow Sands.
James Dayananda, an English professor, interviewed Phillpotts' daughter Adelaide in 1976 for a book he was writing on her father, Eden Phillpotts: Selected Letters, published by University Press of America in 1984. In the book Dayananda writes that Adelaide Phillpotts "remained unmarried until the age of 55....In 1951 she married Nicholas Ross, an American from Boston settled in Britain, much against the wish of her father. Eden Phillpotts cut her off, and never met her again after her marriage, despite several attempts of Adelaide at reconciliation....The letters...throw some light on the ups and downs of the relationship between Eden and Adelaide Phillpotts."
In her 1976 interview with Professor Dayananda, Adelaide Phillpotts shockingly declared that her father had sexually abused her as a child (as far back as when she was six or seven) and that he kept up an intimate relationship--elaborated as "fondling, kissing, intercourse (not penetration)"--with her, off and on, until 1929, when he married his second wife (Adelaide was in her early 30s at this time). She also claims that her father was obsessively jealous of her relationships with other men and, as indicated above, that he never spoke to her again when she finally did marry, against his will, at the age of 55.
This is, of course, a very disturbing bunch of revelations, to say the least, like something out of a modern crime novel. More can be found here, in the Oxford DNB entry on Adelaide Phillpotts by Professor Dayananda.
Some of the letters from Eden to Adelaide included in Professor Dayananda's collection, invariably addressed to "My precious love," "My dearest love," "My sweet love," etc., are suggestive, even if there is not a "smoking gun," so to speak:
"Today I had hoped to welcome my precious girl and have my arms around her again." (1914, when Adelaide was 18)
"But I am exceedingly thankful you did what you have done [breaking off with a man-TPT] for it would be destructive to your art to tangle yourself in an engagement to be married at present and I should deplore it exceedingly. Plenty of time for that." (1917, when Adelaide was 21)
"I was not surprised after your first mention of that Jew and his politeness to hear he wanted you. The damned swine saw you were alone. You must not go to a hotel in future where that sort of vermin harbours for he might have been wickeder than he was and have planned to compromise you in some way." (1929, when Adelaide was 32)
Of course there are myriad fiction writers who seem to have been unpleasant and erring people in real life. But I have to admit these charges against Eden Phillpotts, if true, take things to a new level, as far as I am aware, regarding iniquities of Golden Age crime writers.
Cornell Woolrich's relationship with his mother has been seen as having incestuous overtones, but here in the case of Eden Phillpotts, it's the crime writer accused of monstrously blighting his child's life. Oddly enough, there's a striking resemblance to one of Agatha Christie's own detective novels, written in the 1940s.
Is there any suggestion of a preoccupation with incest in Eden Phillpotts' own fiction? I have never discerned any, though his last mystery novel, George and Georgina, published the same year his daughter married, when he was ninety years old, concerns the relationship between a much-devoted pair of male-female twin siblings. I may take a look at this novel in the future.