Herennius Etruscus died in 251.

Herennius Etruscus was born in 227.

He was killed by Herennius for opposing Marc Antony
He died at age 63 in 43 B.C.

Cicero was killed by Herennius (a centurion) and Popilius (a tribune).

He was proscribed (identified as an enemy of the State) by the Second Triumvirate - Octavian (later known as Augustus), Marcus Aemilius Lepidus, and Mark Antony. However, it is said that Octavian was opposed to adding Cicero to the list of the proscribed.

Cicero was proscribed by the second triumvirate and actively hunted.

A centurion named Herennius is reported to have killed him. His head and hands were hailed to the rostra in the forum in Rome as was done with all of the proscribed vitim's. Just a note: the hands of all the victims were not cut off and nailed, just Cicero's because he had written the Philippics against Mark Antony.