Aguilar and his twin brother Callum were born October 21st in the year of our lord 1460 AD and was in Masyaf.
They’re parents were Assassins, the little they knew of them, was that their father, Sebastiano was from Spain and their mother, Brigit, who was from Ireland. Their father was trained at Masyaf, who on a mission, fell in love with Brigit, brought her back and trained her. The two had been killed during the Spanish Inquisition, a year after the boys had been born. They ended up raised by the Assassin Order, and trained to follow in their parents footsteps.
When they set out on their own missions, Aguilar went to Spain, while Callum went to Ireland.
Aguilar took over the missions their parents had been killed. Hunting down Templars that were using the Spanish Inquisition for their own goals.
He ended up meeting Maria, saving her from a local ‘Inquisitor’. She had made it clear that she wouldn’t bow to the the false church, and become their whore. Aguilar fell for her instantly, the two ended up married six months later – solidify his cover as a Silk Merchant.
She knew about his Assassin work, and patched him up when he would return home. Over the years she bore him three daughters – but refused to let him train any of them.
While working on a mission with Maximus, Aguilar was mortally wounded. There was no doubt in his mind, he would be Turned.