| Leonid dynasty | ||
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The Leonid dynasty or Thracian dynasty produced six Roman emperors during Late Antiquity, reigning over the Roman Empire from 457 to 518. The dynasty's patriarch was Leo I, who was made Roman emperor in 457. Leo's daughter Ariadne became empress and mother to an emperor, and her two husbands were themselves each made emperor in turn. Another relative whose name does not survive of Leo I or his wife Verina married the future augustus Julius Nepos (r. 474–480), the last emperor in the western Roman Empire.[1] The dynasty of Leo succeeded the preceding Valentinianic dynasty (r. 364–455) and Theodosian dynasty (r. 379–457) whose family trees were conjoined and ruled concurrently. Besides Julius Nepos, who administered no more than a rump state the Roman province of Dalmatia in the western empire during the fall of the west, the dynasty's emperors governed the eastern empire.
Leo's eldest daughter Ariadne married Zeno, and their son, Leo II was proclaimed augustus and succeeded his grandfather Leo as an infant, appointing Zeno co-augustus. Leo's younger daughter, Leontia, married first the caesar Patricius, son of the magister militum Aspar, and then Marcianus, son of the augustus Anthemius (r. 467–472). When Leo II died in the year of his grandfather's death, Zeno remained augustus in the eastern Roman empire.
Verina's brother Basiliscus, aided by her relative Armatus the magister militum, usurped the unpopular rule of Zeno in 475, though Zeno recovered the imperial capital Constantinople the following year with the connivance of Armatus. Leontia's husband Marcianus, the grandson of the augustus Marcian (r. 450–457) through his mother Marcia Euphemia, also attempted a usurpation of Zeno, together with his brothers Procopius Anthemius and Romulus.
When Zeno died, Ariadne married the silentarius Anastasius Dicorus and he was acclaimed and crowned augustus. Anastasius's brother Paulus's daughter Irene was married to Olybrius Junior, the grandson of the augustus Olybrius through his mother, the patricia Anicia Juliana and thus the most significant descendant of the Valentinianic–Theodosian imperial line and ignored in the succession on the death of Zeno. Anastasius was the final emperor of the Leonid dynasty, and on his death the administration passed to Justin I (r. 518–527), who with his nephew Justinian the Great (r. 527–565) founded the Justinian dynasty (r. 518–602). Under Justinian, Anastasius's nephews, Hypatius, Pompeius, and Probus were considered imperial candidates during the 532 Nika revolt in Constantinople, in which the Byzantines sought to depose Justinian.