Ioun

Ioun is the godess of knowledge and spreading knowledge
The Ziggurats under Whitestone and Vasselheim (in the The Slayer's Take basement) are both Temples of Ioun. There was an Obelisk related to Ioun in the Frostweald on the way to Sphynx mountain (Kamaljiori) There was an altar in the volcano on the Glintshore that was, imo, described similarly to the altar on top of the Whitestone Ziggurat, but this is a VERY loose connection. It is slightly supported by Brom Goldhand's assertion that many Ioun temples were purposefully hidden or buried, but just as easily could have been a Vecna altar, we don't know if the Whitestone Ziggurat altar was Ioun or Vecna related.
Osysa worships Ioun and uses power from Ioun for her enhanced divination. Brom Goldhand is a Cleric of Ioun
Brom described Ioun as "Wounded"