Lovecraft only provided specific information about Shub-Niggurath in his "revision tales", stories published under the names of clients for whom he ghost-wrote. As Price points out, "For these clients he constructed a parallel myth-cycle to his own, a separate group of Great Old Ones", including
Yig,
Ghatanothoa,
Rhan-Tegoth, "the evil twins
Nug and Yeb"—and Shub-Niggurath. While some of these revision stories just repeat the familiar exclamations, others provide new elements of lore. In "The Last Test" (1927), the first mention of Shub-Niggurath seems to connect her to Nug and Yeb: "I talked in
Yemen with an old man who had come back from the Crimson Desert—he had seen
Irem, the City of Pillars, and had worshipped at the underground shrines of Nug and Yeb—Iä! Shub-Niggurath!" The revision story
The Mound, which describes the discovery of an underground realm called
K'n-yan by a Spanish
conquistador, reports that a temple of
Tsathoggua there "had been turned into a shrine of Shub-Niggurath, the All-Mother and wife of the Not-to-Be-Named-One. This deity was a kind of sophisticated
Astarte, and her worship struck the pious Catholic as supremely obnoxious." The Not-to-Be-Named-One, not being named, is difficult to identify; a similar phrase, translated into Latin as the
Magnum Innominandum, appears in a list in
The Whisperer in Darkness and was included in a scrap of incantation that Lovecraft wrote for
Robert Bloch's "The Shambler from the Stars".
August Derleth identifies this mysterious entity with
Hastur (though Hastur appears in the same
Whisperer in Darkness list with the
Magnum Innominandum), while Robert M. Price equates him with
Yog-Sothoth—though he also suggests that Shub-Niggurath's mate is implicitly the snake god Yig. Finally, in "
Out of the Aeons", a revision tale set in part on the lost continent of
Mu, Lovecraft describes the character T'yog as the "High Priest of Shub-Niggurath and guardian of the copper temple of the Goat with a Thousand Young". In the story, T'yog surprisingly maintains that "the gods friendly to man could be arrayed against the hostile gods, and ... that Shub-Niggurath, Nug, and Yeb, as well as Yig the Serpent-god, were ready to take sides with man" against the more malevolent Ghatanothoa. Shub-Niggurath is called "the Mother Goddess", and reference is made to "her sons", presumably Nug and Yeb. "Yog-Sothoth's wife is the hellish cloud-like entity Shub-Niggurath, in whose honor nameless cults hold the rite of the Goat with a Thousand Young. By her he has two monstrous offspring—the evil twins Nug and Yeb. He has also begotten hellish hybrids upon the females of various organic species throughout the universes of space-time." ==The Black Goat==