Unlike his predecessor, this ruler recognized the Parthian king Osroes I, and while he traveled abroad, this emperor employed the frumentarii and Marcius Turbo to prevent any 
Unlike his predecessor, this ruler recognized the Parthian king Osroes I, and while he traveled abroad, this emperor employed the frumentarii and Marcius Turbo to prevent any coups. This emperor intended Lucius Aelius to become his successor, but outlived him, and following a proclamation by Akiba ben Joseph, this man faced the revolt of Simon Bar Kokhba in Judea. This ruler had his Greek lover Antinous deified, and adopted Antoninus Pius as his successor. For 10 points, name this third of the Five Good Emperors, the successor of Trajan, who ordered his namesake wall be built in England.
Unlike his predecessor, this ruler recognized the Parthian king Osroes I, and while he traveled abroad, this emperor employed the frumentarii and Marcius Turbo to prevent any coups.
Publius Aelius Hadrianus