Isidore Mercator

They call me many things: Murderer. Cutthroat. Thief. But you may call me Isidore Mercator. This article is about a subject that lacks an official name and is known only by its nickname, title, or alias.

Isidore Mercator
Biographical information
Species	Human
Political information
Affiliations	Bellatores Dei

Isidore Mercator, also called Isidorus and I.M., was the pseudonym of the mysterious and brilliant scholar who led the Bellatores Dei, a secret group of religious zealots.

Around the time of the siege of Paris, Mercator ordered the excavation of ruins at Champlieu, Gisacum, and Diodurum. The Hidden One Abbo Cernuus eliminated the men sent to those places in an effort to keep the Lutetia bureau safe. Isidore had his spies track down the unknown assailant and assigned a captain to seek him out at the Abbey of Saint-Germain-des-Prés, though he, too, was eliminated.

During the same period, Isidore tasked Bishop Engelwin with aligning the will of King Charles the Fat with that of the Bellatores Dei, though Engelwin did not manage to do so thanks to the influence Queen Richardis had over her husband. He wrote a letter to inform Isidorus of this and of his future plans, but it remained unsent in his quarters. After Engelwin's death, Isidore wrote a letter to the nun, Euphrasia, also known as "Little Mother," that due to the deterioration of aligning with the king, the deliverance of Queen Richardis must come immediately. As the queen was already captured, Isidore ordered Little Mother to take her to Aquila and to commence the ritual immediately.

Isidore also forged a number of false papal decretals that would "hoodwink Christendom for a thousand years", as historian Shaun Hastings put in 2020.

Appearances

• Assassin's Creed: Valhalla – The Siege of Paris (first mentioned)
• The World of Assassin's Creed Valhalla: Journey to the North – Logs and Files of a Hidden One (mentioned only)