Luis de Santángel

Luis de Santángel (died 1498) was a baptized Jew and finance minister of Ferdinand II. He introduced the explorer Christoffa Corombo and his voyage plans to Queen Isabella I, and financed most of Christoffa's voyage.

Early life
Luis joined the Assassin Order some time prior to 1491. He and fellow Assassin Raphael Sánchez became close to Queen Isabella and King Ferdinand to prevent the Templars from getting complete control over the monarchy.

Journey to Italy
Eventually, he met with Christoffa Corombo, who had plans to sail west. The Assassins and Templars both knew of another continent, America, and informed Christoffa of this. Rodrigo Borgia, leader of the Templar Order, found out about Christoffa's planned journey and arranged a meeting with him, claiming he wanted to finance the journey.

Luis suspected the meeting to be a trap and contacted the leader of Venice's Thieves and fellow Assassin, Antonio de Magianis, to help him protect Christoffa. Antonio then called Ezio Auditore da Firenze for the job, who accepted after he heard that Borgia was involved. Ezio arrived just in time to rescue Christoffa.

Taking down the Spanish Inquisition
Luis returned to Spain along with Christoffa and met with Ezio again some time later. He revealed himself to be an Assassin as well. He then guided Ezio in eliminating the Templars' plans to take down the Spanish Assassins. He also introduced Ezio to Queen Isabella, after he had ended the war between her and King Muhammad XII. Luis convinced Isabella to partially finance Christoffa's voyage, paying for the other part himself.

Not too long after that, Luis was threatened by the Inquisitors, so Ezio set out to take the life of the Inquisitor General Tomás de Torquemada. However, Ezio found out that Tomás wasn't a Templar himself and was just fooled into taking down the Assassins by Rodrigo Borgia. Thus, he spared his life before returning to Italy.

Later life
Luis kept serving the Spanish royal house, but started poisoning Isabella, either as revenge for the Inquisition, or because of her connection to the Templars. However, he died in 1498, before he managed to fulfill his plans.

With his death, there was no one to inform the other Assassins of the Templars' activities in the royal house. Therefore, Ezio Auditore sent his apprentices to Spain to recover Santángel's journal in 1503.