Guard brahmin herd for Grisham: When met, he complains of how wild dogs are killing his brahmin. After that, he will give you the quest to protect his herd of brahmin against a pack of wild dogs. He will pay you $1000 upon completion of the quest, but will take away $100 for each brahmin killed. You will be teleported to his brahmin fields upon accepting the quest and all wild dogs must be killed in order to complete the quest.
If Grisham is killed, and the chosen one wants to sleep with his son/daughter Uncle Biff may appear and initiate dialog instead.
Depending on the character's gender, either Grisham's son or daughter can be persuaded to have sex with the Chosen One. Immediately following Grisham will burst into the room and catch the Chosen One in the act, bringing up a dialogue window. Intelligent characters can claim to be performing a doctor's check-up and come back for a quickie at any time. Lacking sufficient intelligence, the only option is to admit that it's exactly what it looks like and get a shotgun marriage to the NPC in question. At which point, the NPC will ceaselessly follow you around as a companion, sans any useful skills. If the character dies or is sold into slavery the Chosen One gets the Separated perk, you can tell Grisham that his son/daughter is dead. If you tell him the truth, he suffers a heart attack and dies.