Lugos

Lugos was a founder of the organization "Liberalis Circulum", an organization within the Assassin Brotherhood. He was a distant ancestor to Stella Crow.

In early Roman times, Lugos was carrying the Ankh across the Mediterranean Sea when a waterway accidentally opened, causing the ship to sink. Before it inevitably sank, Lugos recorded a message with the Ankh, detailing the ongoing events.

Reference

 * Assassin's Creed 3: Accipiter