Pomponius was a friend of
Sejanus, who served as consul in 31. Upon the latter's denunciation and execution in October of that year, mobs hunted down and killed anyone they could link to Sejanus. Pomponius was placed under house arrest by Tiberius, where he remained until 37. Tiberius died in 37, and his successor Caligula promptly released Pomponius from prison and appointed him as governor of the
senatorial province of
Creta et Cyrenaica. Caligula married
Caesonia, Pomponius' half-sister, in 40, but he was assassinated in late January 41. Upon Caligula's death, Claudius appointed Pomponius' brother,
Quintus Pomponius Secundus as consul (Caligula had been Consul of Rome, as well as emperor, at the time of his assassination). Pomponius himself, who was still serving as governor of Creta et Cyrenaica province, served also as consul from January until June of 44. Pomponius continued to serve as governor of the Creta et Cyrenaica until 50, at which time Claudius appointed him as
governor and
legatus of
Germania Superior. In 50, Pomponius led the Roman legions to victory against the
Chatti and freed the survivors of the
Battle of the Teutoburg Forest after forty years of slavery. For this, he was decreed the honour of a
ornamenta triumphalia. He served as governor of Germania Superior until 54. This was the final mention of Pomponius in the historical record, except by the Plinies. ==Writings==