Question: Vibulenus Agrippa was accused of treason under the reign of the Emperor who was leader during which years?

<P0-S0> Tiberius (Latin: "Tiberius Caesar Dīvī Augustī Fīlius Augustus" ; 16 November 42 BC – 16 March 37 AD) was a Roman emperor from 14 AD to 37 AD. <P0-S1>  Born Tiberius Claudius Nero, a Claudian, Tiberius was the son of Tiberius Claudius Nero and Livia Drusilla. <P0-S2>  His mother divorced Nero and married Octavian, later known as Augustus, in 39 BC, making him a step-son of Octavian. <SEP> <P1-S0> Zhangsun Wuji (died 659), courtesy name Fuji, formally the Duke of Zhao (趙公 ), was a Chinese official who served as a chancellor in the early Tang dynasty. <P1-S1>  He was Empress Zhangsun's brother, which made him a brother-in-law of Emperor Taizong (Li Shimin) and a maternal uncle of Emperor Gaozong (Li Zhi). <P1-S2>  He was an important advisor to Li Shimin when the latter was still the Prince of Qin during the reign of his father, Emperor Gaozu. <P1-S3>  He helped Li Shimin overcome his brothers Li Jiancheng (the Crown Prince) and Li Yuanji (the Prince of Qi) in a succession struggle at the Xuanwu Gate Incident, eventually enabling Li Shimin to become the heir apparent and later the emperor. <P1-S4>  He was also instrumental in Emperor Taizong's selection of Li Zhi as the Crown Prince, and was exceedingly powerful after Li Zhi took the throne as Emperor Gaozong. <P1-S5>  However, he gradually fell out of his nephew's favour by failing to support Emperor Gaozong's decision to depose his first wife, Empress Wang, and replacing her with Empress Wu. <P1-S6>  In 659, Zhangsun Wuji was falsely accused of treason by Empress Wu's political ally, Xu Jingzong, and eventually ordered to be sent into exile by Emperor Gaozong. <P1-S7>  Xu Jingzong subsequently sent the official Yuan Gongyu (袁公瑜) to force Zhangsun Wuji to commit suicide on his way to exile. <SEP> <P2-S0> Li Zi (李滋) (died 897), formally the Prince of Tong (通王), was an imperial prince of the Chinese dynasty Tang Dynasty. <P2-S1>  He was the favorite son of Emperor Xuānzong, but was unable to take the throne after Emperor Xuānzong's death, as his older brother Li Wen (Emperor Yizong) was chosen by the eunuch Wang Zongshi (王宗實), who overpowered other eunuchs who supported Li Zi. <P2-S2>  Later, during the reign of Emperor Yizong's son (Li Zi's nephew) Emperor Zhaozong, Emperor Zhaozong tried to commission imperial princes to command armies to counteract the powerful warlords ("Jiedushi") and eunuchs. <P2-S3>  In response, in 897, when Emperor Zhaozong had to flee to the domain of one of the warlords, Han Jian, Han falsely accused 11 imperial princes, including Li Zi, of treason, and massacred them without approval from Emperor Zhaozong. <SEP> <P3-S0> Vibulenus Agrippa (called Vibullius Agrippa in Dio's "Roman History") was a Roman knight of the Equestrian rank who was accused of some crime, probably treason, before the senate in the final years of the reign of Tiberius, in 36 AD. <P3-S1>  His case is often mentioned to highlight the frequency with which ordinary citizens were being executed in that time, and for the novelty of the case's outcome: Vibulenus faced his accusers in the senate and swallowed poison that he had brought with him in a ring.