Tharence Wo was a Jedi Knight during the Old Republic who recorded certain information he had learned during his time as a Jedi into his journals. Eventually, the journals made their way to the Jedi Library and Archives. Tharence's journals came in handy during the time the Jedi were forced to confront the Yinchorri, who had launched a private war against the Jedi.

Jedi Master Yaddle consulted the journals of Tharence and found valuable information about Yinchorri society, their homeworlds, and perhaps the most important piece of information Tharence had discovered, the Yinchorri were immune to mind manipulation through the Force. With this information, Tharence was able to assist the Jedi as they infiltrated Yinchorri occupied space and launched a counterattack.