Cthaeghya is the half-sister of Cthulhu, she is responsible for spawning the Cthulhi. This article is a stub. You can help the The H.P. Lovecraft Wiki by expanding it. Retrieved from "https://lovecraft.fandom.com/wiki/Cthaeghya?oldid=26398" Categories: Articles including information from the Expanded Cthulhu Mythos Article stubs Great Old Ones Community content is available under CC-BY-SA unless otherwise noted.