Aguilar de Nerha was a member of the Spanish Brotherhood of Assassins during the 15th century. He wore robes bearing Moorish influence and wielded two Hidden Blades. He is an ancestor of Callum Lynch, who relived his genetic memories at some point in the modern era. Near the end of the 15th century, he performed a Leap of Faith from the Seville Cathedral.
- Aguilar, and his modern day descendant, Callum Lynch, will both be portrayed by Michael Fassbender in the forthcoming Assassin's Creed motion picture.
- "Aguilar" is a Spanish surname meaning "relative to eagles".