The gens Ninnia was a plebeian

Plebs

The plebs was the general body of free land-owning Roman citizens in Ancient Rome. They were distinct from the higher order of the patricians. A member of the plebs was known as a plebeian...

 family at Rome

Ancient Rome

Ancient Rome was a thriving civilization that grew on the Italian Peninsula as early as the 8th century BC. Located along the Mediterranean Sea and centered on the city of Rome, it expanded to one of the largest empires in the ancient world....

. Members of the gens

Gens

In ancient Rome, a gens , plural gentes, referred to a family, consisting of all those individuals who shared the same nomen and claimed descent from a common ancestor. A branch of a gens was called a stirps . The gens was an important social structure at Rome and throughout Italy during the...

first appear at Capua

Capua

Capua is a city and comune in the province of Caserta, Campania, southern Italy, situated 25 km north of Naples, on the northeastern edge of the Campanian plain. Ancient Capua was situated where Santa Maria Capua Vetere is now...

 during the Second Punic War

Second Punic War

The Second Punic War, also referred to as The Hannibalic War and The War Against Hannibal, lasted from 218 to 201 BC and involved combatants in the western and eastern Mediterranean. This was the second major war between Carthage and the Roman Republic, with the participation of the Berbers on...

, and are found at Rome towards the end of the Republic

Roman Republic

The Roman Republic was the period of the ancient Roman civilization where the government operated as a republic. It began with the overthrow of the Roman monarchy, traditionally dated around 508 BC, and its replacement by a government headed by two consuls, elected annually by the citizens and...

.

Origin of the gens

The Ninnii appear to have been of Campania

Campania

Campania is a region in southern Italy. The region has a population of around 5.8 million people, making it the second-most-populous region of Italy; its total area of 13,590 km² makes it the most densely populated region in the country...

n origin. Two brothers of this family hosted Hannibal when he entered the city of Capua in 216 B.C., in the aftermath of the Battle of Cannae

Battle of Cannae

The Battle of Cannae was a major battle of the Second Punic War, which took place on August 2, 216 BC near the town of Cannae in Apulia in southeast Italy. The army of Carthage under Hannibal decisively defeated a numerically superior army of the Roman Republic under command of the consuls Lucius...

. The historian Titus Livius

Livy

Titus Livius — known as Livy in English — was a Roman historian who wrote a monumental history of Rome and the Roman people. Ab Urbe Condita Libri, "Chapters from the Foundation of the City," covering the period from the earliest legends of Rome well before the traditional foundation in 753 BC...

 identifies them as members of the noble Capuan house of the Ninnii Celeres.

Praenomina used by the gens

The Ninnii Celeres used the Oscan

Oscan language

Oscan is a term used to describe both an extinct language of southern Italy and the language group to which it belonged.The Oscan language was spoken by a number of tribes, including the Samnites, the Aurunci, the Sidicini, and the Ausones. The latter three tribes were often grouped under the name...

 praenomina

Praenomen

The praenomen was a personal name chosen by the parents of a Roman child. It was first bestowed on the dies lustricus , the eighth day after the birth of a girl, or the ninth day after the birth of a boy...

 Sthenius and Pacuvius. A branch of the family at Rome in the 1st century BC used the Latin

Latin

Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

 praenomen Lucius

Lucius (praenomen)

Lucius is a Latin praenomen, or personal name, which was one of the most common names throughout Roman history. The feminine form is Lucia . The praenomen was used by both patrician and plebeian families, and gave rise to the patronymic gentes Lucia and Lucilia, as well as the cognomen Lucullus...

.

Branches and cognomina of the gens

Two cognomina

Cognomen

The cognomen nōmen "name") was the third name of a citizen of Ancient Rome, under Roman naming conventions. The cognomen started as a nickname, but lost that purpose when it became hereditary. Hereditary cognomina were used to augment the second name in order to identify a particular branch within...

of the gens are known from Republican times: Celer, which means "swift", belonged to a family of the Ninnii at Capua during the Second Punic War. The surname Quadratus is found amongst the Ninnii at Rome in the time of Cicero

Cicero

Marcus Tullius Cicero , was a Roman philosopher, statesman, lawyer, political theorist, and Roman constitutionalist. He came from a wealthy municipal family of the equestrian order, and is widely considered one of Rome's greatest orators and prose stylists.He introduced the Romans to the chief...

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Members of the gens

• Sthenius Ninnius Celer
  Sthenius and Pacuvius Ninnius Celer
  Sthenius and Pacuvius Ninnius Celer were brothers, and members of the noble Capuan house of the Ninnii Celeres, during the Second Punic War. Following the Battle of Cannae in 216 B.C., Hannibal advanced upon the city of Capua, which opened its gates to him, as defeat otherwise seemed inevitable...
  
  , a Capuan nobleman, who hosted Hannibal after he entered the city in 216 B.C.
• Pacuvius Ninnius Celer
  Sthenius and Pacuvius Ninnius Celer
  Sthenius and Pacuvius Ninnius Celer were brothers, and members of the noble Capuan house of the Ninnii Celeres, during the Second Punic War. Following the Battle of Cannae in 216 B.C., Hannibal advanced upon the city of Capua, which opened its gates to him, as defeat otherwise seemed inevitable...
  
  , brother of Sthenius, and also Hannibal's host; he is sometimes confused with Pacuvius Calavius
  Pacuvius Calavius
  Pacuvius Calavius was the chief magistrate of Capua during the Second Punic War. In the aftermath of the Battle of Lake Trasimene, he prevented the people of Capua from surrendering the city to Hannibal...
  
  .
• Lucius Ninnius Quadratus, tribune of the plebs
  Tribune
  Tribune was a title shared by elected officials in the Roman Republic. Tribunes had the power to convene the Plebeian Council and to act as its president, which also gave them the right to propose legislation before it. They were sacrosanct, in the sense that any assault on their person was...
  
   in 58 B.C., a warm friend of Cicero
  Cicero
  Marcus Tullius Cicero , was a Roman philosopher, statesman, lawyer, political theorist, and Roman constitutionalist. He came from a wealthy municipal family of the equestrian order, and is widely considered one of Rome's greatest orators and prose stylists.He introduced the Romans to the chief...
  
  .
• Ninnius Crassus, said to have translated the Iliad
  Iliad
  The Iliad is an epic poem in dactylic hexameters, traditionally attributed to Homer. Set during the Trojan War, the ten-year siege of the city of Troy by a coalition of Greek states, it tells of the battles and events during the weeks of a quarrel between King Agamemnon and the warrior Achilles...
  
   into Latin verse; his name appears in Priscian
  Priscian
  Priscianus Caesariensis , commonly known as Priscian, was a Latin grammarian. He wrote the Institutiones grammaticae on the subject...
  
  us, but there is a possibility that it is corrupt.