Marcus Licinius Crassus (86 or 85 BC – c. 49 BC[1]) was a quaestor of the Roman Republic in 54 BC. He was the elder son of the Marcus Licinius Crassus who formed the political alliance known as the "First Triumvirate" with Pompey and Caesar. His mother was Tertulla, the daughter of Marcus Varro Lucullus.[2] His father and his younger brother, Publius, died at the Battle of Carrhae in 53 BC, after which time Marcus continued to be a partisan of Caesar.
Marcus served under Caesar in the Gallic Wars, first as quaestor, then as proquaestor in 53 BC. He is attested as a legatus under Caesar in 49. He was also a pontifex of Roman state religion, probably as early as 60.[3]