The name "Ecclesia Gnostica Catholica" was not applied to the church until Crowley wrote the Gnostic Mass in 1913, which Reuss proclaimed to be the church's official rite.
In 1979, Hymenaeus Alpha X° (Grady McMurtry) separated Ecclesia Gnostica Catholica from Ordo Templi Orientis, and made it into an independent organization, with himself at the head of both.