A more plausible theory is that she burned coal in a room without ventilation to succumb to carbon monoxide.
     Brutus, or Marcus Junius Brutus Cæpio, the adoptive son and assassin of Julius Caesar, husband of Portia, killed himself by opening his belly with a sword.
     Mithridates "Eupator" the Great, more commonly known as Mithridates VI of Pontus or Mithridates I of Pontus, was a king of Pontus and the Bosphorus from the Mithridatic dynasty. Following the betrayal of his son, he tried to commit suicide by ingesting poison. Either the quantity was too small because he shared it with two of his daughters, or the king was immune due to prolonged ingestion of small quantities of poison, nonetheless, his attempt failed. Having vainly tried to end his life by throwing himself on his sword, he then sought the help of a bodyguard, who finished him off.
     Cleopatra VII was an ancient Egyptian queen from the Ptolemaic dynasty, born around 69 BC and died on 12th August, 30 BC. She committed suicide by allowing herself to be bitten by a cobra after Octavian's victory.
     Claudius II, also known as Claudius II Gothicus, was a Roman emperor from September 268 until his death in 270.
     Tivoli is a metropolitan city of Rome, in the region of Latium, Italy.
     Titus was a Roman emperor. He belonged to the Flavian dynasty and reigned from 79 to 81. According to this book, he would have married one of the daughters of Zenobia, but this character died before Zenobia was born.
     Mark Antony was a Roman politician and military man. According to this book, he would have married one of Zenobia's daughters, but this character died before Zenobia was born.

                     Seventh Speech – Portia to Volumnius

                                Portia, wife of Brutus

                                     Context
     Shortly after the defeat and death of Brutus and Cassius, Portia, wife of the former, and daughter of Cato of Utica, expressed through her words and actions that she wanted to follow her husband's fate and no longer live. Her parents, hoping to prevent her from committing suicide, removed all means that could facilitate her dire project. They brought in the philosopher Volumnius, a close friend of Brutus, in an attempt to persuade her through reason not to succumb to despair. However, this woman, having listened to him with much impatience, responded to him as follows.

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