Aquilus

Aquilius was a Roman Assassin and was an ancestor of Altair Ibn-La Ahad.

Trivia
 * "Aqulia" is a constellation which in Latin means "eagle". Also it's brightest star is named Altair. Eagles are represented commonly as similar to Assassins, for example Eagle Vision used in all of the current Assassin's Creed games, and the appearance of the Armor of Altair that has robes supposedly made to look like eagle's wings