Hadrian spouse Vibia Sabina
Hadrian (; Latin: Caesar Trajanus Hadrianus [ˈkae̯sar trajˈjaːnʊs (h)adriˈjaːnʊs]; 24 January 76 – 10 July 138) was Roman emperor from 117 to 138. He was born in Italica (close to modern Santiponce in Spain), a Roman municipium founded by Italic settlers in Hispania Baetica; his branch of the gens Aelia, the Aeli Hadriani, came from the town of Hadria. His father was of senatorial rank and was a first cousin of Emperor Trajan. Hadrian married Trajan's grand-niece Vibia Sabina early in his career before Trajan became emperor and possibly at the behest of Trajan's wife Pompeia Plotina. Plotina and Trajan's close friend and adviser Lucius Licinius Sura were well disposed towards Hadrian. When Trajan died, his widow claimed that he had nominated Hadrian as emperor immediately before his death. 
Rome's military and Senate approved Hadrian's succession, but four leading senators were unlawfully put to death soon after. They had opposed Hadrian or seemed to threaten his succession, and the Senate held him responsible for their deaths and never forgave him. He earned further disapproval among the elite by abandoning Trajan's expansionist policies and territorial gains in Mesopotamia, Assyria, Armenia, and parts of Dacia. Hadrian preferred to invest in the development of stable, defensible borders and the unification of the empire's disparate peoples. He is known for building Hadrian's Wall, which marked the northern limit of Britannia.
Hadrian energetically pursued his own imperial ideals and personal interests. He visited almost every province of the Empire, accompanied by an imperial retinue of specialists and administrators. He encouraged military preparedness and discipline and fostered, designed, or personally subsidised various civil and religious institutions and building projects. In Rome itself, he rebuilt the Pantheon and constructed the vast Temple of Venus and Roma. In Egypt, he may have rebuilt the Serapeum of Alexandria. He was an ardent admirer of Greece and sought to make Athens the cultural capital of the Empire, so he ordered the construction of many opulent temples there. His intense relationship with Greek youth Antinous and the latter's untimely death led Hadrian to establish a widespread cult late in his reign. He suppressed the Bar Kokhba revolt in Judaea.
Hadrian's last years were marred by chronic illness. He saw the Bar Kokhba revolt as the failure of his panhellenic ideal. He executed two more senators for their alleged plots against him, and this provoked further resentment. His marriage to Vibia Sabina had been unhappy and childless; he adopted Antoninus Pius in 138 and nominated him as a successor on the condition that Antoninus adopt Marcus Aurelius and Lucius Verus as his own heirs. Hadrian died the same year at Baiae, and Antoninus had him deified, despite opposition from the Senate. Edward Gibbon includes him among the Empire's "Five Good Emperors", a "benevolent dictator"; Hadrian's own Senate found him remote and authoritarian. He has been described as enigmatic and contradictory, with a capacity for both great personal generosity and extreme cruelty and driven by insatiable curiosity, self-conceit, and ambition.Relationship with Trajan and his family
Around the time of his quaestorship, in 100 or 101, Hadrian had married Trajan's seventeen- or eighteen-year-old grandniece, Vibia Sabina. Trajan himself seems to have been less than enthusiastic about the marriage, and with good reason, as the couple's relationship would prove to be scandalously poor. The marriage might have been arranged by Trajan's empress, Plotina. This highly cultured, influential woman shared many of Hadrian's values and interests, including the idea of the Roman Empire as a commonwealth with an underlying Hellenic culture. If Hadrian were to be appointed Trajan's successor, Plotina and her extended family could retain their social profile and political influence after Trajan's death. Hadrian could also count on the support of his mother-in-law, Salonia Matidia, who was the daughter of Trajan's beloved sister Ulpia Marciana. When Ulpia Marciana died in 112, Trajan had her deified, and made Salonia Matidia an Augusta.
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