As with most major gods and goddesses in Roman mythology, the literary concept of Venus is mantled in whole-cloth borrowings from the literary Greek mythology of her counterpart, Aphrodite. In some Latin mythology Cupid was the son of Venus and Mars, the god of war. At other times, or in parallel myths and theologies, Venus was understood to be the consort of Vulcan. Virgil, in compliment to his patron Augustus and the gens Julia, embellished an existing connection between Venus, whom Julius Caesar had adopted as his protectress, and Aeneas.
Augustus
Julius Caesar