Lucius Cassius Longinus (consul 107 BC)

Lucius Cassius Longinus was a consul of the Roman Republic in 107 BC. His colleague was Gaius Marius.

As a praetor in 111 BC, he was sent to Numidia to bring Jugurtha to Rome, promising him safe conduct. Jugurtha valued this pledge as much as the public pledge for his safety. In his consulship with Marius, he ventured to Gallia Narbonensis to oppose the Cimbri. He was killed at the Battle of Burdigala (modern-day Bordeaux) against the Tigurini, a pagus of the Celtic Helvetii. (According to 'Dictionary of Battles & Sieges: A-E' by Tony Jaques, page 15, Tigurini under Divicus ambushed Lucius at Aginnum, modern-day Agen on the River Garonne, where he was routed and killed.) The killing of Longinus was one of the reasons given by Julius Caesar in De Bello Gallico for why he denied the Helvetii the freedom to migrate through Roman territory in 58 BC.

References

 This article incorporates text from a publication now in the public domain: Smith, William, ed. (1870). "Longinus, Cassius (5)". Dictionary of Greek and Roman Biography and Mythology. 2. p. 799.