Gnaeus Calpurnius Piso

Roman governor of Syria

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July 1, 2026

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Gnaeus Calpurnius Piso was a Roman politician who served as the governor of Syria under Emperor Tiberius. He is primarily known for his conflict with Germanicus, Tiberius's adopted son and a popular general.12

Piso was appointed governor of Syria around 17 CE. During his tenure, he clashed with Germanicus, who was touring the eastern provinces. Germanicus accused Piso of poisoning him, leading to Piso's recall and subsequent suicide when he was prosecuted by the Senate. While Tiberius was suspected of involvement in the events, the charges against Piso could not be fully substantiated. Syria was a significant Roman province, and its governor held considerable authority.13

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Germanicus
…into conflict with Gnaeus Calpurnius Piso, whom Tiberius had installed as governor of Syria. Although Piso criticized and sometimes frustrated his decisions, Germanicus managed to settle the Armenian succession, organize the previously independent states of Cappadocia and Commagene into provinces, and negotiate successfully with Artabanus III of Parthia.
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…into conflict with Gnaeus Calpurnius Piso, whom Tiberius had installed as governor of Syria. Although Piso criticized and sometimes frustrated his decisions, Germanicus managed to settle the Armenian succession, organize the previously independent states of Cappadocia and Commagene into provinces, and negotiate successfully with Artabanus III of Parthia.
Read More