Overview
Thalena bears The Architect as a title. In The Eleven Stories of Old, The Architect is chapter three, and in Chronasis it is the title of a massive volume on her desk.
Thalena's Title
The massive Chronasis volume titled The Architect carries Thalena's title. Horol'Khai later addresses her as architect of worlds.
Thalena signs her own writing with the title. In Chronasis, after the Xalmyrran cycles are broken, she writes that Xalmyrra is free and closes chapter three with her signature as Thalena Xenith, archon of Space and Time, Author and Architect.
The Eleven Stories of Old
During her time-displaced life in Xalmyrra, Thalena searches Irrathis for The Eleven Stories of Old. She writes the first version herself from half-truths, myths, warnings, and hidden names. She gives that book to Hrzai, who sends it toward Skarnheim.
After ending the War of Scars as Arcanis, Thalena writes The Eleven Stories of Old again. In the older Skarnheim copy read by Jin, The Architect is chapter three. The chapter contains a story of a young girl gifted and cursed with the power of eternity, a meteor prophecy about an island, and names for Haverloch and Ulzathir. The Rimvold vault copy's Architect chapter includes an illustration of Thalena's trains.
Chronasis Volume
In Chronasis, Thalena keeps a massive volume titled The Architect on the left side of her desk.