Romulus-Quirinus
Ennius (fl. 180s BC) refers to Romulus as a divinity without reference to Quirinus, whom Roman mythographers identified as an originally Sabine war-deity, and thus to be identified with Roman Mars. Lucilius lists Quirinus and Romulus as separate deities, and Varro accords them different temples. Images of Quirinus showed him as a bearded warrior wielding a spear as a god of war, the embodiment of Roman strength and a deified likeness of the city of Rome. He had a Flamen Maior called the Flamen Quirinalis, who oversaw his worship and rituals in the ordainment of Roman religion attributed to Romulus' royal successor, Numa Pompilius. There is however no evidence for the conflated Romulus-Quirinus before the first century BC.
Ovid in Book 14, lines 812-828, of the Metamorphoses gives a description of the deification of Romulus and his wife Hersilia, who are given the new names of Quirinus and Hora respectively. Mars, the father of Romulus, is given permission by Jupiter to bring his son up to Olympus to live with the Olympians. Ovid uses the words of Ennius as a direct quote and puts them into the mouth of the King of the Gods, "There shall be one whom you shall raise to the blue vault of heaven". Ovid then uses a simile to describe the change that Romulus undertakes as he ascends to live with the Olympians, "as leaden balls from a broad sling melt in mid sky: Finer his features now and worthier of heaven’s high-raised couch, his lineaments those of Quirinus in his robe of state”.
Read more about this topic: Romulus And Remus