From Tatters of the King
The man known as Umberto Calzione is an former Vatican investigator and current member of the outlawed Order of the Sword of St. Jerome. Having a personal obsession with the Brothers of the Yellow Sign he found himself on the same trail as the other investigators and eventually encountered them on the Viceroy of India.
The eradication of supernatural evil in the name of Jesus Christ.
Trapped and isolated by The King in Yellow, feeling his ability to resist the being's insidious attacks ebbing away despite his unshakable faith and unwilling to endanger the world by his aquiesence, Umberto took his own life.
His true identity, his past - almost everything in fact.