When you receive the e-mail from Maude about this bail jumper, she mentions he is in the Great Chaparral area, although he is on the border between that and the Great Senora Desert. Look at the image below for an exact location. You'll need to be a little extra careful approaching this guy, as he has some friends with him, who are armed.
There are three guys in the truck and one standing next to Larry by the barn door. Whenever you approach them, Larry will run while the rest will attack you. Kill everyone but Larry and then chase after him. You can knock him over by running into him and then hit him once, after which he will follow you back. Drive him back to Maude's place to get your reward.
