FTP, identify this Roman emperor who succeeded Trajan and built a namesake wall to protect Britain.
Early on he gained the enmity of the senate by executing four ex-consuls, including Gaius Avidius Negrinus, for plotting against him.  As a young man he was called "Graeculus" for his Hellenic studies and he was ridiculed for his sexual relationship with the Greek youth Antinous, who was made a god upon his death by drowning.  He put down the revolt of Bar Kokhba in Jerusalem in 135 and chose his Antoninus Pius as his successor.  FTP, identify this Roman emperor who succeeded Trajan and built a namesake wall to protect Britain.
Early on he gained the enmity of the senate by executing four ex-consuls, including Gaius Avidius Negrinus, for plotting against him.  
Hadrian (or Publius Aelius Traianus Hadrianus)