Question: When was the  Roman politician and general died during who's reign Gaius Nasennius were soldiers?

Context paragraphs:
Gaius Norbanus: Gaius Norbanus (died 82 BC), (possibly surnamed Balbus or Bulbus), was a Roman politician who was elected consul in 83 BC alongside Lucius Cornelius Scipio Asiaticus Asiagenus.  He committed suicide during the civil war between Lucius Cornelius Sulla and Gaius Marius the Younger.

Gaius Julius Erucius Clarus Vibianus: Gaius Julius Erucius Clarus Vibianus (died 197) was a Roman politician and senator.  He was appointed consul with Quintus Pompeius Sosius Falco in AD 193, during the reign of Commodus.

Gaius Servilius Glaucia: Gaius Servilius Glaucia (died 100 BC) was a Roman politician who served as tribune of the Plebs in 101 BC and praetor in 100 BC.  He arranged for the murder of an elected tribune of plebs to make a spot for Lucius Appuleius Saturninus who was the next one to become tribune by the votes.  While attempting to stand for consul for 99 BC, he was engaged in an exchange between himself and another candidate Gaius Memmius who attempted to prevent his candidature on the grounds that he had not waited the mandatory two years between election as praetor and election to the consulship, as stipulated by the "Lex Villia Annalis".  In a fit of rage he killed Memmius and fled to the home of one of his supporters, where he committed suicide after Saturninus' riot was suppressed.

Julius Caesar: Gaius Julius Caesar (Latin: CAIVS IVLIVS CAESAR, ] , born: 13 July 100 BC – 15 March 44 BC), usually called Julius Caesar, was a Roman politician and general who played a critical role in the events that led to the demise of the Roman Republic and the rise of the Roman Empire.  He is also known as a notable author of Latin prose.

Gaius Flavius Fimbria: Gaius Flavius Fimbria (died 84 BC) was a Roman politician and a violent partisan of Gaius Marius.  He fought in the First Mithridatic War.

Nasennia (gens): The gens Nasennia was an obscure plebeian family at Rome.  None of the Nasennii held any of the higher offices of the Roman state, and the family is best known from Gaius Nasennius, a soldier in the time of Caesar.  Many other Nasennii are known from inscriptions.

Lucius Aurelius Cotta (consul 65 BC): Lucius Aurelius Cotta was a Roman politician from an old noble family who held the offices of praetor (70 BC), consul (65 BC) and censor (64 BC).  Both his father and grandfather of the same name had been consuls, and his two brothers, Gaius Aurelius Cotta and Marcus Aurelius Cotta, preceded him as consul in 75 and 74 BC respectively.  His sister, Aurelia, was married to Gaius Julius Caesar, brother-in-law to Gaius Marius and possibly Lucius Cornelius Sulla, and they were the parents of the famous general and eventual dictator, Gaius Julius Caesar.

Gaius Memmius (tribune): Gaius Memmius (died December 100 BC) was a Roman politician and senator who was murdered by Gaius Servilius Glaucia during the disturbances that rocked Rome during the violent uprising and suppression of Lucius Appuleius Saturninus.

Trial of Trebonius: The Trial of Trebonius refers to the military trial of the Roman soldier Trebonius for the killing of Gaius Lusius, his superior officer and nephew of the Roman General and Consul Gaius Marius.  The trial serves to show Marius’ impartiality when dealing out justice that made him popular among his soldiers as well as the common Roman citizen.  Valerius Maximus calls Trebonius Gaius Plotius.  Because Plutarch says that this even contributed to Marius' third election as consul, this most likely takes place in 104 BC.  This event does not refer to Gaius Trebonius, one of the allies and later assassins of Julius Caesar.

Gaius Cassius Parmensis: Gaius Cassius Parmensis (born c. 74 BC; died 31 or 30 BC in Athens) was a Roman politician and a Latin writer of the late Roman Republic, who belonged to the circle of conspirators against Gaius Julius Caesar.

Supporting paragraphs: Nasennia (gens) Julius Caesar
Answer: 15 March 44 BC