Lucius Licinius Crassus
The characters belong to the generation, which precedes the one of Cicero. The main characters of the dialogue are Marcus Antonius (not the triumvir) and Lucius Licinius Crassus (not the person who killed Julius Caesar); other friends of them, such as Gaius Iulius Caesar (not the dictator), Sulpicius and Scaevola intervene occasionally.