Guiliano de Medici

 was an Italian nobleman and the brother of Pope Leo X. He had Steven Taylor and Vicki Pallister arrested when they arrived in Florence. He had angered the wealthy and powerful Ravelli family and believed Steven and Vicki to be part of an assassination plot. He was suspicious of the First Doctor when he had arrived in court. He planed the destruction of his enemies in Florence. He was in league with Niccolo Machiavelli and fabricated enemies. (AUDIO: The Ravelli Conspiracy)