Eugene Tacitus

Eugene Tacitus was a scribe and writer of religious text. After a new god was elected, their bible had to be rewritten.

Recantation
Eugene reordered all major events. He often wrote that events had been predestined so as to calm the public. After the death of Pepin VI, Sejanus had Eugene recant from the belief that he was a god. Pepin VII was to be the new god, and so Eugene was chose to believe it under penalty of death.

Coronation
Eugene spoke to Pepin VII before his coronation, instructing him as to his actions. He questioned Eugene as to his belief in the process of "god-making". Eugene recorded Pepin's coronation, trying to make him sound brave. Pepin declared that he was not a god. Then, the Doctor and Frobisher arrived and were treated as godly ambassadors. They announced they weren’t but Eugene saved them and Pepin by saying previous gods have experienced a period of mental fatigue and so Pepin was merely confused.

Serving Pepin
Eugene was present during the assassination initiation of Pepin. He lent him a coin for the process. Eugene took the Doctor to the library, actually a collection of bibles in Eugene's bedroom. (BFA: The Holy Terror)