ASCANIUS or IuLus, in Roman legend, the son of Aeneas (q.v.) by Creusa or Lavinia, and ancestor of the gens Iulia. On the death of Aeneas, the government of Latium was left in the hands of Lavinia, Ascanius being too young to undertake it. After 3o years he left Lavinium, and founded Alba Longa.
See references under AENEAS.