Crassius (or more correctly Crassus) makes reference to the Colosseum in Rome. He was killed in 53 BCE and the building of the Colosseum (Amphitheatrum Flavium) did not start until 72 CE.
Crassus (here wrongly named Crassius) did not die fighting a woman in the arena, but was killed in 53 BCE by the Parthians at a conference after he had lost the battle against them at Carrhae.