Roman cognomen meaning “heavy” in Latin. Famous bearers include Lucius Junius Brutus, the traditional founder of the Roman Republic, and Marcus Junius Brutus, the statesman who conspired to assassinate Julius Caesar.
Derived from the Germanic element brun “armour, protection” or brun “brown”. Saint Bruno of Cologne was a German monk of the 11th century who founded the Carthusian Order. The surname has belonged to Giordano Bruno, a philosopher burned at the stake by the Inquisition.