Mars, the god of war
Mars was the son of Juno and a magical flower and initially was the Roman god of fertility and vegetation, and protector of cattle, but later he became associated with battle. As the god of spring, when his major festivals were held, he presided over agriculture in general. In his warlike aspect, Mars was offered sacrifices before combat and was said to appear on the battlefield accompanied by Bellona, a warrior goddess variously identified as his wife, sister or daughter. Mars unlike his Greek counterpart, Ares, was more widely worshipped than any of the other Roman gods, probably because his sons Romulus and Remus were said to have founded Rome. As the consort of Rhea Sylvia and father of Romulus and Remus, Mars was considered the father of the Roman people.
see Roman Mythology