Timothy A. Donahue is a self-proclaimed author and alleged philanthropist trying to sell his book "Get Rich Quick" on the streets of Saint Denis.
Events of Red Dead Redemption 2
The player can encounter Donahue in the streets of Saint Denis, selling a copy of his book for fifty dollars. If the player decides to buy it from him, they discover that the book was actually a fraud, and so they can later return to Donahue and ask for a refund. At this point, Donahue flees and thus his fate is left to the player; they can leave him, or loot the $50 from him after either killing or hogtying him.