"my cousin Trajan"
Trajan
GNU Free Documentation LicenseTrajan - Credit: Lutz Langer
Trajan's Column in Rome, the monument containing his ashes
GNU Free Documentation LicenseTrajan's Column in Rome, the monument containing his ashes - Credit: Matthias Kabel

Marcus Ulpius Nerva Traianus (53-117 AD), who reigned as Emperor from 98 AD until his death was, like Hadrian, a native of Italica, and was another of the "Five Good Emperors." It was Hadrian who brought Trajan news of his adoption by Nerva, thereby ensuring his succession.

For a modern biography, see J. Bennett, Trajan, Optimus Princeps.