In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: He ended his life as king of Illyricum and went to Elysium after he and his wife fulfilled a prophecy. This son of Telephassa and Agenor, the rulers of Phoenicia, succeeded at a task in which his four brothers could not. At the end of his life he and his wife Harmonia are turned into snakes, but this has occurred well after he has sown some dragon's teeth. FTP, name this brother of Europa and founder of Thebes.
A:
Social Science