Guillaume's Ballad is a book in Lies of P.
Location[]
The book is obtained by speaking to Giangio for the first time near the end of the Path of Misery.
Transcript[]
Guillaume, the King's knight, found the shining tree on the rocky mountain. The tree's fruit resembles gold coins, and this fruit is a miraculous blessing for many people who have recovered from different diseases and who have been able to escape the plague. The elated knight built a castle and called himself the holy knight.
But remember, sojourners. Miracles always have a price, no matter how captivating they might be.