Venus (mythology)
Her cult began in Ardea and Lavinium, Latium.  On August 18, 293 BC, the first temple to her was built . August 18 was then a festival called the Vinalia Rustica.  On April 1, the Veneralia was celebrated in honor of Venus Verticordia, the protector against vice.  On April 23, 215 BC, a temple was built on the Capitol dedicated to Venus Erycina to commemorate the Roman defeat at Lake Trasum.