Harold Thornton

 is a character in Red Dead Redemption.

Background
Harold cheated on his wife, Elizabeth, with his children's nanny. He later kicked her out with no money or shelter.

Interactions
In the stranger mission The Wronged Woman you meet him in a duel when he refuses to give you money for the woman he kicked out. You kill him and then loot his corpse for money. You can later find him in Blackwater cemetery where you will continue the stranger mission.