Preston O'Leary

"Preston O'Leary, the much-loved owner of O'Leary's Travelling Circus and Carnival Show, was killed shortly before this "toxic monster" took control of his circus. Due to the lack of manpower, lawmen and investigators were not available to investigate thoroughly O'Leary's case and Perry was never charged with manslaughter."

- Bartlett assumes Professor Perry killed O'Leary

Preston O'Leary is an unseen, mentioned only character in Red Dead Revolver.

Info
Preston is mentioned throughout the game by Brimstone citizens and is also mentioned on almost every journal page covering a main performer of Dr. Perry's Circus in Bartlett's book.

He was a leader and ringmaster of a freak show called O'Leary's Travelling Circus and Carnival Show where he employed Lightning LaRouche and Blade the Slade before he was killed by Professor Perry who took over his travelling circus and turned it into a vicious outlaw gang.

Rumours had it he was about to fire Blade for failing in too many knife acts, implying Slade killed a couple of O'Leary's performers.

Trivia

 * Despite everyone saying what a good, kind and gentle soul O'Leary was or maybe because of that, he still deserved to get slaughtered by Perry in order for him to create his own circus crew, which played quite an important role in Revolvers story and its showdown mode.
 * He may be related to Aiden O'Leary, another mentioned only character in Red Dead Redemption.
 * Rumours also have it he is the supposed patriarch or ancestor of the McReary family somehow, as he reportedly banged a woman sur-named McReary.
 * Jack Swift, a supposed sharpshooter in Perry's Circus, foolishly preferred O'Leary over Professor Perry.