[1] Geminus had family connections with Patavium; he is one of three consular Ducenii that Ronald Syme identifies as a native of that town.
[6] Nevertheless, either date would fit the next known office: in the year 62 the emperor Nero appointed Geminus, along with Lucius Calpurnius Piso and Aulus Pompeius Paulinus, to a commission to manage the public revenues.
[7] According to the inscription from Epidurus, after stepping down from the consulate Geminus became a member of the quindecimviri sacris faciundis, one of the four most prestigious priesthoods of ancient Rome, and the sodales Augustales.
Tacitus mentions Geminus' presence at the meeting when Galba announced on 10 January 69 that he would make Lucius Calpurnius Piso his heir.
"[10] Following the assassination of Galba and the ascension of Otho as emperor, Geminus lost his office and Flavius Sabinus was restored.