Symposiacs (1.6.2)

Story tells us, that Mithridates, the famous enemy of the Romans, among other trials of skill that he instituted, proposed rewards to the greatest eater and to the stoutest

drinker in his kingdom. He won both the prizes himself; he out-drank every man living, and for his excellency that way he was called Bacchus. But this reason for his surname is a vain fancy and an idle story; for whilst he was an infant a flash of lightning burnt his cradle, but did his body no harm, and only left a little mark on his forehead, which his hair covered when he was grown a boy; and after he came to be a man, another flash broke into his bed-chamber, and burnt the arrows in a quiver that was hanging under him; from whence his diviners presaged, that archers and light-armed men should win him considerable victories in his wars; and the vulgar gave him this name, because in those many dangers by lightning he bore some resemblance to the Theban Bacchus.