[[Image:Claudiusreal.jpg|left|thumb|300px|Britannicus'un doğumu anısına bastırılmış [[sestertius]]]]
Britannicus was probably born on [[February 12]], [] to the [[Roman Emperor]] [[Claudius]] and his wife [[Messalina]]<ref>This date has a margin of error of one year according to Levick</ref>. He was the oldest surviving son of his father at birth, Claudius' older son having died at the age of 14 nearly two decades before. He was accordingly named '''Tiberius Claudius Germanicus''', sharing his father's [[praenomen]] as recognition of his status as heir. Britannicus' father had been reigning for less than a month, and his position was boosted greatly by the arrival of a successor. To mark the birth, the emperor issued [[sestertius|sestertii]] with the obverse ''Spes Augusta'' - the hope of the imperial family. Two years later, in 43, Claudius was granted the honorific '''"Britannicus"''' by the senate as a reward for his [[Roman invasion of Britain|conquest of Britain]]. The emperor refused it for himself, but accepted it on behalf of his young son. This is the name by which the boy became known to posterity. According to Suetonius, Claudius doted extensively on Britannicus. He carried him around at public events, and shouted "Good luck to you, my boy!" to elicit a similar response from the crowds. He was supposedly a precocious child.
==Annesi Messalina'nın ölümü ==
In 48, Britannicus became a pawn in the acts that led to the demise of Messalina. One of the conditions for her bigamous marriage to [[Gaius Silius]] was that he adopt her son as his own. They apparently then planned to rule as [[regent]]s for the boy after the planned overthrow of Claudius. Messalina may have believed this was the only way to prevent her son from being killed with his father. Messalina and Silius were discovered shortly after their wedding and put to death, having never launched their [[coup]].
==Üvey kardeşi Nero'nun yükselişi==