Nictzin Wilstone Dyalhis (June 4, 1873–May 8, 1942) was an American chemist and short story writer who specialized in the genres of science fiction and fantasy.
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Firm facts about Dyalhis’s life are few, as he coupled his limited output of fiction with a penchant for personal privacy, an avoidance of publicity, and intentional deception. Even his name is uncertain. His World War I draft registration card establishes his full name as Nictzin Wilstone Dyalhis, but it marks the earliest known appearance of this name. His first wife’s death certificate gives his first name as “Fred,” and he has been thought to have possibly altered his surname to Dyalhis from a more prosaic “Dallas” — in his stories, Dyalhis played with common spellings, so that “Earth” becomes Aerth and “Venus,” Venhez. According to L. Sprague de Camp, however, Dyalhis was his actual surname, inherited from his Welsh father, and his given name Nictzin was also authentic, bestowed on him due to his father’s fascination with the Aztecs.
His World War I draft registration card and 1920 Census record establish his birthdate as June 4, 1873, and his state of birth as Massachusetts. According to the 1920 census, his father was also born in Massachusetts, and his mother in Guatemala. But in the 1930 census he was reported to have been born about 1880 in Arizona to parents also born in that state. In bibliographic sources, his year of birth was usually cited (with a question mark) as 1879; Dziemianowicz gives it as 1880; and he was speculated to have been born in England — or Pima, Arizona.
Among the imaginative readers of his stories, Dyalhis acquired a reputation for possessing unusual abilities and an exotic history as an adventurer and world traveler. The known facts of his life are more prosaic, mostly centering around Pennsylvania and Maryland. At some time during his youth he lost one eye, as noted on his draft card. He worked as a box nailer in 1918, a chemist in 1920, a machinist in 1930, and a writer for magazines in 1940.