Aurelia gens
The gens Aurelia was a plebeian family at ancient Rome, which flourished from the third century BC to the latest period of the Empire. The first of the Aurelian gens to obtain the consulship was Gaius Aurelius Cotta in 252 BC. From then to the end of the Republic, the Aurelii supplied many distinguished statesmen, before entering a period of relative obscurity under the early emperors. In the latter part of the first century, a family of the Aurelii rose to prominence, obtaining patrician status, and eventually the throne itself. A series of emperors belonged to this family , through birth or adoption, including Marcus Aurelius and the members of the Severan dynasty. In 212, the "Constitutio Antoniniana" of Caracalla (whose full name was Marcus Aurelius Antoninus) granted Roman citizenship to all free residents of the Empire, resulting in vast numbers of new citizens who assumed the nomen "Aurelius", in honour of their patron, including several emperors: seven of the eleven emperors between Gallienus and Diocletian (Claudius Gothicus, Quintillus, Probus, Carus, Carinus, Numerian and Maximian) bore the name "Marcus Aurelius". So ubiquitous was the name in the latter centuries of the Empire that it suffered abbreviation, as "Aur.", and  it becomes difficult to distinguish members of the Aurelian gens from other persons bearing the name. Origin. The nomen "Aurelius" is usually connected with the Latin adjective "aureus", meaning "golden", in which case it was probably derived from the color of a person's hair. However, Festus reports that the original form of the nomen was "Auselius", and that the medial 's' was replaced by 'r' at a relatively early period; the same process occurred with the archaic nomina "Fusia, Numisia, Papisia, Valesia", and "Vetusia", which became "Furia, Numeria, Papiria, Valeria", and "Veturia" in classical Latin. According to Festus, "Auselius  was derived from a Sabine word for the sun. Praenomina. All of the praenomina used by the chief families of the Aurelii were common throughout Roman history. The Aurelii of the Republic primarily used Gaius, Lucius, Marcus", and "Publius", to which the Aurelii Orestides added "Gnaeus". The Aurelii Fulvi of imperial times used "Titus, Marcus", and "Lucius", while the Aurelii Symmachi used "Quintus" and "Lucius". Branches and cognomina. There were three main stirpes of the Aurelii in republican times, distinguished by the cognomina "Cotta" (also spelled "Cota")", Orestes", and "Scaurus". "Cotta" and "Scaurus" appear on coins, together with a fourth  surname, "Rufus", which does not occur among the ancient writers. A few personal cognomina are also found, including "Pecuniola", apparently referring to the poverty of one of the Aurelii during the First Punic War. "Cotta", the surname of the oldest and most illustrious branch of the Aurelii under the Republic, probably refers to a cowlick, or unruly shock of hair; but its derivation is uncertain, and an alternative explanation might be that it derives from a dialectical form of "cocta", literally "cooked", or in this case "sunburnt". Marcus Aurelius Cotta, moneyer in 139 BC, minted an unusual denarius, featuring Hercules  in a biga driven by centaurs, presumably alluding to some mythological event connected with the gens, but the exact symbolism is unknown. The Aurelii Cottae were prominent from the First Punic War down to the time of Tiberius, after which they faded into obscurity. The last of this family appearing in history include Marcus Aurelius Cotta Maximus Messalinus, a friend of Tiberius, who squandered his family fortune through reckless prodigality, and his son, who received a stipend from Nero in order to maintain his household in a manner befitting his illustrious forebears. The Cottae were related to Julius Caesar and  Augustus through Aurelia Cotta, who was Caesar's mother. The Aurelii Scauri were a relatively small family, which flourished during the last two centuries of the Republic. Their surname, "Scaurus", belongs to a common class of cognomina derived from an individual's physical features, and referred to someone with swollen ankles. "Orestes", the surname of a family that flourished for about a century toward the end of the Republic, was a Greek name, and belonged to a class of surnames of foreign origin, which appear during the middle and late Republic. In Greek mythology, Orestes was the son of Agamemnon  and Clytemnestra, and avenged his father's murder by slaying his own mother, and after escaping the judgment of the Erinyes, became king of Mycenae. The circumstances by which the name became attached to a branch of the Aurelii are unclear, but perhaps allude to some heroic deed, or military service in Greece. The Aurelii Fulvi, who rose to prominence in imperial times, originally came from Nemausus in Gallia Narbonensis. Titus Aurelius Fulvus, the first of the family to attain the consulship, was made a patrician about AD 73 or 74. In the second century, the Aurelii Fulvi obtained the  Empire itself, when the consul's grandson, Titus Aurelius Fulvus, was adopted as the successor to Hadrian, becoming the emperor Antoninus Pius. Most of the emperors who followed were born or adopted into the gens, through the end of the Severan dynasty. The surname "Fulvus" was a common surname, referring to someone with yellowish, yellow-brown, tawny, or strawberry blond hair. The Aurelii Galli were a family that achieved notability during the second century, attaining the consulship on at least three occasions. Their surname, "Gallus", had two common derivations, referring either to a cockerel, or to a Gaul. In the  latter case, it might indicate that the first of this family was of Gallic descent, that he was born in Gaul, that he had performed some noteworthy deed in Gaul, or that in some manner he resembled a Gaul. The Aurelii Symmachi were one of the last great families of the western empire, holding the highest offices of the Roman state during the fourth and fifth centuries. The Symmachi were regarded as members of the old Roman aristocracy, and acquired a reputation for their wisdom and learning. Section::::"Stemma" of the Aurelii Cottae. "Stemma" made from Münzer and Badian. Aurelia gens