Brutus, or Brute of Troy, is a legendary descendant of the Trojan hero Aeneas, known in medieval British legend as the eponymous founder and first king of Britain. This legend first appears in the Historia Britonum, a 9th-century historical compilation attributed to Nennius, but is best known from the account given by the 12th-century chronicler Geoffrey of Monmouth in his Historia Regum Britanniae. However, he is not mentioned in any classical text and is not considered to be historical.