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Eastern Roman Empire

Ruler: Leo I
Reigned: Eastern Augustus 457 - 466 AD
Denomination: AV Solidus
Mint: Constantinople 2nd Officina
Date of Issue: 462 or 466 AD
Obverse: Pearl-diademed, helmeted, and cuirassed bust facing, slightly right, holding spear over shoulder and shield. "D.N. LEO PE-RPET AVG."
Reverse: Victory standing left holding long cross. "VICTORIA AVGGG Θ"
Mint marks:
Reference: RIC X 605 p285 Depeyrot 93/1, RCVM 21404
Weight: 4.3 gms
Nominal Weight: 4.5 gms
Diameter: 19.3 mm


Leo I (Flavius Valerius Leo Augustus) was a native of Dacia Aureliana in or near Thrace, and was known as Leo the Thracian. He was born Leo Marcellus in Thracia or in Dacia Aureliana province in the year 401 to a Thraco-Roman family. He served in the Roman army, rising to the rank of 'comes'. Leo was the last of a series of emperors placed on the throne by Aspar, the Alan serving as commander-in-chief of the army, who thought Leo would be an easy puppet ruler. Instead, Leo became more and more independent from Aspar, causing tension that would culminate in the assassination of the latter.

Leo's coronation as emperor on 7 February 457, was the first known to involve the Patriarch of Constantinople. Leo I made an alliance with the Isaurians and was thus able to eliminate Aspar. The price of the alliance was the marriage of Leo's daughter to Tarasicodissa, leader of the Isaurians who, as Zeno, became emperor in 474. In 469, Aspar attempted to assassinate Zeno and very nearly succeeded. Finally, in 471, Aspar's son Ardabur was implicated in a plot against Leo and both were killed by palace eunuchs acting on Leo's orders.

The Balkans were ravaged by the Ostrogoths, after a disagreement between the Emperor and the young chief Theodoric the Great that had been raised at Leo's court in Constantinople, where he was steeped in Roman government and military tactics. There were also some raids by the Huns. However, these attackers were unable to take Constantinople thanks to the walls, which had been rebuilt and reinforced in the reign of Theodosius II and against which they possessed no suitable siege engines.

Leo's reign was also noteworthy for his influence in the Western Roman Empire, marked by his appointment of Anthemius as Western Roman Emperor in 467. He attempted to build on this political achievement with an expedition against the Vandals in 468, which was defeated due to the arrogance of Leo's brother-in-law Basiliscus. This disaster drained the Empire of men and money. The expedition, which cost 130,000 pounds of gold and 700 pounds of silver, consisted of 1,113 ships carrying 100,000 men, but in the end lost 600 ships. After this defeat, Vandals raided Greek coasts until a costly peace agreement was signed between Leo and Genseric.

Leo died of dysentery at the age of 73 on 18 January 474.

He is commemorated as a Saint in the Orthodox Church, with his feast day on January 20.

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