Complex sentence: Perhaps an indigenous origin of the name is suggested by "De Origo Gentis Romanae", in which Iulus and Ascanius are identical, and described as the son of Jupiter, originally known as "Jobus", and then "Julus".
Split into simpler sentences: Perhaps an indigenous origin of the name is suggested by "De Origo Gentis Romanae", in which Iulus and Ascanius are identical. Described as the son of Jupiter, he was originally known as "Jobus", and then "Julus".