WordNet (r) 3.0 (2006):
Tiberius n 1: son-in-law of Augustus who became a suspicious tyrannical Emperor of Rome after a brilliant military career (42 BC to AD 37) [syn: Tiberius, Tiberius Claudius Nero Caesar Augustus]Hitchcock's Bible Names Dictionary (late 1800's):
Tiberius, the son of Tiber