I took out the star names, Allabar, and Mak Thuum Ngatha, as I recognize those, but where did you get the others from?
Bolothamogg, Holashner, Piscaethces, Shothotugg, and Y'Chak were mentioned in 3E's
Lords of Madness as "Elder Evils" that the aboleths recognize as deities.
The Great Mother is mentioned in 4E's
Underdark as the force behind the creation of beholders (before 4E, the Great Mother was an entire layer of the Abyss).
Shothragot is an aspect of Tharizdun that has some sort of connection to the Far Realm (I honestly don't much about it, though).
Thoon is an entity that some illithids revere (its only mention in 4E, that I'm aware of, is in the Thoon Hulk entry of
Monster Manual 3).
Father Llymic, Pandorym, and Ragnorra are all detailed in 3E's
Elder Evils (Pandorym is the subject of a Forgotten Realms novel that I haven't read, too).
Finally the draeden were strange monsters that were mentioned to predate existence prior to 4E. As far as I know there are no references to them in 4E, and they were not stated to originate from the Far Realm, either (the Far Realm might not have been introduced into D&D yet).