Yazdegerd I

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Yazdegerd I
"King of kings of Iran and Aniran"
Coin of Yazdegerd I
Reign 399 – 21 January, 420
Predecessor Bahram IV
Successor Shapur IV
Died 21 January, 420
Hyrcania, Ērānshahr
Consort Shushandukht
Issue Shapur IV
Bahram V
House House of Sasan
Father Shapur III
Religion Zoroastrianism

Yazdegerd I (Middle Persian: 𐭩𐭦𐭣𐭪𐭥𐭲𐭩 <yzdkrt|> Yazdekerd, meaning "made by God"; New Persian: یزدگرد Yazdegerd) was the fourteenth Sasanian king of Persia and ruled from 399 to 420. He was the son of Shapur III (383–388).[1] He succeeded to the Sasanian throne on the assassination of his brother Bahram IV in 399 and ruled for twenty-one years till his death in 420.

Yazdegerd I's reign was largely uneventful. The king is described as being of a peaceful disposition. There were cordial relations between Persia and the Eastern Roman Empire as well as between Persia and the Western Roman Empire. Early during his reign, Yazdegerd was entrusted the care of the Roman prince Theodosius by his father Arcadius on the latter's death in 408, and Yazdegerd faithfully defended the life, power and possessions of the Roman prince.[2]

Yazdegerd promoted Christianity in the early years of his reign and later opposed it. He is known in Sasanian sources (and also in Islamic Persian sources who use Sasanian sources as their references) as "the Sinner". However, this is propaganda made by the Zoroastrians due to his persecution of the Zoroastrians who opposed him, and his tolerance towards his non-Zoroastrian subjects, such as the Christians and the Jews.[3][4] Yazdegerd also used the title of "Ramshahr" ("who maintains peace in his dominion"), which fitted to him, due to his peace with the Romans and tolerance towards his subjects. The title "Ramshahr" was a title used by the legendary Kayanid kings, and thus starts the Sasanian interest in Kayanid history, where they later would adopt the title of "Kay" and use the slogan "xwarrah".[4]

However, due to the Christians use of his tolerance to attack the Zoroastrians, and the appointment of the intolerant vizier Mihr Narseh, resulted in persecutions of the Christians,[3] and also the struggle to convert Armenia to Zoroastrianism. During Yazdegerd's last days, there took place a civil war between his sons. Bahram V emerged victorious and claimed the throne. Yazdegerd I died in 420 and was succeeded by his son Bahram V.

Early life[edit]

Yazdegerd was the son of Shapur III (383–388). Yazdegerd had three sons whom were named: Shapur IV, Narseh, and Bahram V.


When Yazdegerd's brother Bahram IV was assassinated in 399, he succeeded him.[5] The Persian soldiers who had murdered Bahram IV did not hurt him on account of his excellent character and fine disposition. The general tenor of his rule was quite peaceful.

Relations with Rome[edit]

The Ostrogoth invasion of 386, the revolt of Maximus in 387, the Antioch revolt of 387, the invasion of Gaul in 388, the massacres at Thessalonika and the rebellion of Arbogastes and Eugenius in 393 had severely weakened the Roman Empire. Between 386 and 398, Gildo the Moor ruled an independent kingdom in Africa, and in 395 the Goths took to arms under their leader Alaric.[6] But Yazdegerd on his accession to the throne desisted from assuming any aggressive posture towards the Eastern Roman Emperor Arcadius or the Western Roman Emperor Honorius. Yazdegerd's extreme tranquility and his reluctance to invade the Roman Empire earned him the epithet "Ramashtras," "the most quiet," or "the most firm," he justified his assumption of it by a complete abstinence from all military expeditions.[7]

Adoption of Theodosius[edit]

On the ninth year of his reign, it is believed, Yazdegerd was entrusted the care of Prince Theodosius by his father Arcadius, the Eastern Roman Emperor.[7] It was strange that Arcadius chose neither his younger-brother Honorius nor any of his distinguished subjects for the purpose and instead entrusted his son to the charge of the Persian monarch. He accompanied the appointment by a solemn appeal to the magnanimity of Isdigerd, whom he exhorted at some length to defend with all his force, and guide with his best wisdom, the young king and his kingdom. One writer even goes to the extent of claiming that Arcadius gifted Yazdegerd a thousand pounds of pure gold in return for his favour. When Arcadius died, and the testament was opened, information of its contents was sent to Isdigerd, who at once accepted the charge assigned to him, and addressed a letter to the Senate of Constantinople, in which he declared his determination to punish any attempt against his ward with the extremest severity. Flattered, he performed his newfound role with utmost sincerity providing him the best possible education and assistance.

A eunuch named Antiochus was selected and sent to Constantinople to look after the young Emperor.[8] He was, for many years, the prince's intimate companion. He was supposed to have been killed or expelled from the kingdom by Pulcheria, elder sister of Theodosius. However, even after Antiochus' end, Yazdegerd continued his aid to the young monarch.[8]

However, these narratives were written a century and a half after the death of Arcadius, and have been rejected by modern scholars due to the silence of contemporary writers as outweighing the positive statements of the later ones.

Religious policy[edit]

According to Wein, Yazdegerd I was a wise, benevolent, and astute ruler.[9] He was also known for his religious tolerance, towards both Christians and Jews. For example, the Talmud (Ksubos, 61a) relates that Ameimar, Rav Ashi, and Mar Zutra would sit in his court. However, excessive zeal of the Christian bishop of Ctesiphon, Abdaas, provoked a reaction, and when he tried to burn the Great Fire temple of Ctesiphon, Yazdegerd I turned against the Christians (see following).

Inclination towards Christianity[edit]

See also: Maruthas

During the early part of his reign, Yazdegerd inclined towards Christianity. George Rawlinson feels that Yazdegerd may even himself wanted to convert to Christianity.[10] Antiochus openly wrote in favor of Christians, and this rapidly increased conversions to Christianity.[10] Yazdegerd also persecuted the Magi, the Zoroastrian high-priests, who opposed him and his ideas.

Yazdegerd is believed to have been an ardent follower of at least two prominent Christian bishops: Marutha, bishop of Mesapotamia, and Abdaas, the bishop of Ctesiphon.[10] Marutha in particular exerted a great amount of influence over the Persian Emperor, and it was at his insistence that Yazdegerd issued a declaration in 410 giving Christians the freedom of worship.[11] This proclamation is sometimes regarded as "the Edict of Milan for the Assyrian Church".[12] Furthermore, in order to create a religious buffer between the Church of Rome and the Persian Church, Yazdegerd actively promoted Christianity.[13]

According to the Byzantine historian Procopius, "From the start, Yazdegerd was a sovereign whose nobility of character had won for him the greatest renown. He gave his Christian subjects such freedom, even support that they prayed daily for the safety of 'the victorious and glorious king' ".[14] A contemporary Christian account says that "the good and clement King Yazdegerd did well to the poor and wretched".[15][16]

Yazdegerd sent the Catholicos of Seleucia-Ctesiphon to mediate between the king and his brother who governed Pars. Another Catholicos was Yazdegerd's envoy to Theodosius.

Dispute with Abdas[edit]

See also: Abda of Kaskhar

Engaged in a dispute with the local magi in AD 420, Abdas was accused of burning down one of their temples, a pyramid of Ahura Mazda. Yazdegerd ordered the bishop to restore and repair the building at his own expense, upon Abdas' refusal the King ordered the destruction of the churches.[17] During the same period, Mihr Narseh was appointed as Yazdegerd's wuzurg framadār (vizier or prime minister), who managed to change the peaceful policy of Yazdegerd, and which resulted in persecutions of Christians.[18]

Relations with Armenia[edit]

When indulging in the persecution of Christians in Persia, Mihr Narseh also attempted to spread Zoroastrianism in Armenia. Under these circumstances, Isaac, the Metropolitan of Armenia, proceeded to the court of Ctesiphon, and petitioned Yazdegerd to replace Artaxias IV with Khosrov IV who had been deposed twenty-one years earlier, and whom Bahram IV had imprisoned in the "Castle of Oblivion".[19] Yazdegerd I released Khosrov IV and reinstated him upon the throne of Armenia in order to stabilize the condition. However, Khosrov IV survived for only a year, and on his death, the throne became empty once again, leaving Armenia to chaos.[20] So Yazdegerd responded by placing his own son Shapur IV on the throne of Armenia, forcing him upon the reluctant nobles of Armenia.[20] Shapur IV concentrated on reconciliation and established friendly relations with the nobles. He ruled Armenia for four years and returned to Ctesiphon in 419 to capture the throne from the king Yazdegerd I, who was in his death-bed.[20]


Yazdegerd I died in 420. However, the circumstances surrounding Yazdegerd's death are not clear. According to a long-existing popular legend, he was killed during his stay in Hyrcania by a fabulous horse which emerged magically from a stream. This happened near Tus according to Ferdowsi The legend may be some sort of an allusion to his death at the hands of his nobles.[21][18]

War of succession[edit]

When Yazdegerd I was overcome by mortal illness in the year 419,[20] Shapur IV immediately rushed to Ctesiphon to claim the Sassanian throne leaving behind a viceroy to govern Armenia.[20] But the viceroy-designate was killed soon after Shapur left Armenia. A battle of succession followed and lasted for three years after Yazdegerd's death.[20] Shapur was treacherously killed by the courtiers in the initial stages of the battle. Bahram V arrived from Al-Hira and captured the throne after defeating the Persian nobles with an Arab army in a three-year-long battle.[20] Narseh, another son of Yazdegerd I was appointed governor of Khorasan.

Coins of Yazdegerd I[edit]

The coins of Yazdegerd are not of much artistic value. They all bear the head of a middle-aged man, with a short beard and hair gathered behind the head in a cluster of curls. The distinguishing mark is the inflated ball above the headdress which is adorned with a crescent in the front. On the reverse side of the coin is a fire-altar. The coins bear the legend: "Mazdisn bag ramashtras Izdikerti, malkan malka Airan," or "the Ormazd-worshipping divine most peaceful Yazdegerd, king of the kings of Iran;" and on the reverse, Ramashtras Izdikerti, "the most peaceful Isdigerd".[20] In some cases, Yazdegerd's coins also bear the names of "Ardashatri" (Ardashir) or, "Varahran", probably a reference to Ardeshir, the founder of the Sasanian Empire and Yazdegerd I's son Bahram V or Bahramgur. Perhaps a more reasonable account of the matter would be that Yazdegerd had originally a son Ardeshir, whom he intended to make his successor, but that this son died or offended him, and that then he gave his place to Bahram Gur.


  1. ^ Nöldeke 1879, p. 73 n. 3.
  2. ^ This is, of course, not true: [Edward Gibbon; The History Of The Decline & Fall Of The Roman Empire; Womersley ed.; Ch.32, pg.261 (Vol.II)]
  3. ^ a b Shapur Shahbazi 2003.
  4. ^ a b Daryaee 2008, pp. 21-22.
  5. ^ Shapur Shahbazi 2005, "Sasanian Dynasty"
  6. ^ Rawlinson 1882, p.270.
  7. ^ a b Rawlinson 1882, p.272.
  8. ^ a b Rawlinson 1882, p.273.
  9. ^ Wein
  10. ^ a b c Rawlinson 1882, p.275.
  11. ^ Asmussen, 1983, p. 940
  12. ^ Wigram, p. 89
  13. ^ A Short World History of Christianity by Robert Bruce Mullin, pp. 82-85
  14. ^ Procopius(1.2, 8)
  15. ^ Nöldeke 1879, p. 75 n..
  16. ^ Greatrex-Lieu, p. 32
  17. ^ Theodoret, v. 39
  18. ^ a b Daryaee 2008, p. 24.
  19. ^ Rawlinson 1882, p.277.
  20. ^ a b c d e f g h Rawlinson 1882, p.278.
  21. ^ Nöldeke 1879, Nöldeke, p. 77 and n. 1, p. 78.


Yazdegerd I
Preceded by
Bahram IV
Great King (Shah) of Persia
Succeeded by
Shapur IV