Battle of Pharsalus
On the eve of the Battle of Pharsalus, Caesar vowed the temple to "Venus Victrix". He eventually decided to dedicate the temple to Venus Genetrix, the mother of Aeneas, and thus the mythical ancestress of the Julian family. The Temple was dedicated on 26 September 46 BC, the last day of Caesar's triumph. The forum and temple were eventually completed by Octavian.