Hadrian

n. (A.D. 76-138, original name Publius Aelius Hadrianus), Emperor of Rome (117-138) who was the adopted son of Trajan

Publius Aelius Traianus Hadrianus (January 24, 76 ––  July 10, 138), known as Hadrian in English, was  emperor of Rome from 117 A.D. to 138 A.D., as well as a Stoic and Epicurean philosopher. A member of the gens Aelia, Hadrian was the third of the "Five Good Emperors." His reign had a faltering beginning, a glorious middle, and a tragic conclusion.
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Noun
1. Roman Emperor who was the adoptive son of Trajan; travelled throughout his empire to strengthen its frontiers and encourage learning and architecture; on a visit to Britain in 122 he ordered the construction of Hadrian's Wall (76-138)
(synonym) Publius Aelius Hadrianus, Adrian
(hypernym) Roman Emperor, Emperor of Rome

ADRIANO