Found in the treasury of the Cathedral of Attnam. When examined with a Stethoscope, "you hear coins clinking inside". If you liberate your home island of Tweraif and then speak to him, he can be bribed with a whopping 50,000 gold (1) for a lower-scoring victory ending.
|Thesaurius the hoardmaster|
|Wisdom||37||Reading, Talking, Kicking, Vomiting|
|Random Stats||-||Permanent States|
(1) - /human.cpp#L5492