Gwyndolin (Dark Souls)
"The last born of Lord Gwyn, Gwyndolin is the leader of the Blade of the Dark Moon covenant and the only remaining deity in Anor Londo. Gwyndolin’s followers are few, but their tasks are of vital importance. Although born male, due to magic and association with the moon, Gwyndolin was raised as a daughter but is biologically a male and is reffered to as such from Gwynevere who lovingly calls him brother. Gwyndolin created the illusion of a sister Gwynevere, who helps guard over Anor Londo. An unmasking of these deities would be tantamount to blasphemy."
( https://darksouls.wiki.fextralife.com/Dark+Sun+Gwyndolin )
