"Tiberius Julius Caesar Nero Gemellus, known as Tiberius Gemellus (Latin: Tiberius Caesar Drusus filius Tiberius Augustus nepos divus Augustus pronepos; 10 October AD 19–37/38) was the son of Drusus and Livilla, the grandson of the Emperor Tiberius, and the second cousin of the Emperor Caligula. Gemellus is a nickname meaning "the twin". His twin brother, Tiberius Claudius Caesar Germanicus II Gemellus, died while still an infant in 23. His father and older cousins died, and are suspected by contemporary sources as having been systematically eliminated by the powerful praetorian prefect Sejanus. Their removal allowed Gemellus and Caligula to be named joint-heirs by Tiberius in 35, a decision that ultimately resulted in Caligula assuming power and having Gemellus killed, or by forcing him to kill himself, in late 37 or early 38." - (en.wikipedia.org 31.01.2020)
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