Tiberius, Caligula, and Claudius.

             Tiberius, Caligula, and Claudius. Tiberius was Roman Emperor from 14 AD to 37 AD. Tiberius would later marry Augustus' daughter Julia the Elder and even later be adopted by Augustus, bearing the name Tiberius Julius Caesar. The subsequent emperors after Tiberius would continue this blended dynasty of both families for the next forty years; historians have named it the Julio-Claudian dynasty. In relations to the other emperors of this dynasty, Tiberius was the stepson of Augustus, great-uncle of Caligula, paternal uncle of Claudius, and great-great uncle of Nero.He is remembered as a dark, reclusive, and somber ruler who never really desired to be emperor. 
          Caligula was also known as Gaius, was Roman Emperor from 37 to 41. Caligula's father Germanicus was the nephew and adopted son of emperor Tiberius. He was a very successful general and one of Rome's most beloved public figures. The young Gaius earned the nickname Caligula (meaning "little soldier's boot")  from his father's soldiers while accompanying him during his campaigns in Germania.
           Claudius was Roman Emperor from 41 to 54. Afflicted with a limp and slight deafness due to sickness at a young age, his family ostracized him and excluded him from public office until his consulship with his nephew Caligula in 37. Claudius' infirmity probably saved him from the fate of many other nobles during the purges of Tiberius' and Caligula's reigns; potential enemies did not see him as a serious threat. His survival led to his being declared emperor by the Praetorian Guard after Caligula's assassination, at which point he was the last adult male of his family.Despite his lack of experience, Claudius proved to be an able and efficient administrator. He was also an ambitious builder, constructing many new roads, aqueducts, and canals across the empire.