421

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Millennium: 1st millennium
Centuries:
Decades:
Years:
421 in various calendars
Gregorian calendar 421
CDXXI
Ab urbe condita 1174
Assyrian calendar 5171
Balinese saka calendar 342–343
Bengali calendar −172
Berber calendar 1371
Buddhist calendar 965
Burmese calendar −217
Byzantine calendar 5929–5930
Chinese calendar 庚申年 (Metal  Monkey)
3118 or 2911
     to 
辛酉年 (Metal  Rooster)
3119 or 2912
Coptic calendar 137–138
Discordian calendar 1587
Ethiopian calendar 413–414
Hebrew calendar 4181–4182
Hindu calendars
 - Vikram Samvat 477–478
 - Shaka Samvat 342–343
 - Kali Yuga 3521–3522
Holocene calendar 10421
Iranian calendar 201 BP – 200 BP
Islamic calendar 207 BH – 206 BH
Javanese calendar 305–306
Julian calendar 421
CDXXI
Korean calendar 2754
Minguo calendar 1491 before ROC
民前1491年
Nanakshahi calendar −1047
Seleucid era 732/733 AG
Thai solar calendar 963–964
Tibetan calendar 阳金猴年
(male Iron-Monkey)
547 or 166 or −606
     to 
阴金鸡年
(female Iron-Rooster)
548 or 167 or −605
Solidus of Emperor Constantius III Solidus Constantius III-RIC 1325.jpg
Solidus of Emperor Constantius III

Year 421 ( CDXXI ) was a common year starting on Saturday of the Julian calendar. At the time, it was known as the Year of the Consulship of Agricola and Eustathius (or, less frequently, year 1174 Ab urbe condita ). The denomination 421 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

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<span class="mw-page-title-main">Honorius (emperor)</span> Western Roman emperor from 393 to 423

Honorius was Roman emperor from 393 to 423. He was the younger son of emperor Theodosius I and his first wife Aelia Flaccilla. After the death of Theodosius in 395, Honorius, under the regency of Stilicho, ruled the western half of the empire while his brother Arcadius ruled the eastern half. His reign over the Western Roman Empire was notably precarious and chaotic. In 410, Rome was sacked for the first time since the Battle of the Allia almost 800 years prior.

<span class="mw-page-title-main">Galla Placidia</span> Roman empress in 421

Galla Placidia, daughter of the Roman emperor Theodosius I, was a mother, tutor, and advisor to emperor Valentinian III. She was queen consort to Ataulf, King of the Visigoths from 414 until his death in 415, briefly empress consort to Constantius III in 421, and managed the government administration as a regent during the early reign of Valentinian III until her death.

The 380s decade ran from January 1, 380, to December 31, 389.

The 430s decade ran from January 1, 430, to December 31, 439.

The 420s decade ran from January 1, 420, to December 31, 429.

<span class="mw-page-title-main">395</span> Calendar year

Year 395 (CCCXCV) was a common year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Olybrius and Probinus. The denomination 395 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

The 390s decade ran from January 1, 390 to December 31, 399

The 340s decade ran from January 1, 340, to December 31, 349.

The 350s decade ran from January 1, 350, to December 31, 359.

The 290s decade ran from January 1, 290, to December 31, 299.

Year 388 (CCCLXXXVIII) was a leap year starting on Saturday of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus without colleague. The denomination 388 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

<span class="mw-page-title-main">386</span> Calendar year

Year 386 (CCCLXXXVI) was a common year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Honorius and Euodius. The denomination 386 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Year 424 (CDXXIV) was a leap year starting on Tuesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Castinus and Victor. The denomination 424 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Year 344 (CCCXLIV) was a leap year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Leontius and Bonosus. The denomination 344 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

<span class="mw-page-title-main">Constantius III</span> Roman emperor in 421

Constantius III was briefly Western Roman emperor in 421, having earned the throne through his capability as a general under Honorius. By 411 he had achieved the rank of magister militum, and in the same year he suppressed the revolt of the usurper Constantine III. Constantius went on to lead campaigns against various barbarian groups in Hispania and Gaul, recovering much of both for the Western Roman Empire. He married Honorius's sister Galla Placidia in 417, a sign of his ascendant status, and was proclaimed co-emperor by Honorius on 8 February 421. Constantius reigned for seven months before dying on 2 September 421.

<span class="mw-page-title-main">Joannes</span> Western Roman emperor from 423 to 425

Joannes or John was Western Roman emperor from 423 to 425.

Flavius Castinus held the position of patricius in the court of Roman Emperor Honorius at the time of the Emperor's death, and most likely for some time before. He also served as consul for the year 424.

<span class="mw-page-title-main">AD 420</span> Calendar year

Year 420 (CDXX) was a leap year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Theodosius and Constantius. The denomination 420 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

The history of the Later Roman Empire covers the history of the Roman Empire from the beginning of the rule of Diocletian in 284 AD and the establishment of the Tetrarchy in 293 AD by Diocletian to the death of Heraclius in 641 AD.

<span class="mw-page-title-main">Roman civil war of 425</span> War between Emperor Joannes and Emperor Theodosius II

The Roman Civil War of 425 was a short civil war between the West Roman Emperor Joannes and the East Roman Emperor Theodosius II. After rising tensions, battles took place in Italy between the armies of both halves of the empire. Despite this, the conflict did not end by battle, but as a result of a conspiracy in which the Western emperor was captured and killed shortly afterwards.

References

  1. Holum, Kenneth G. (October 25, 1989). Theodosian Empresses: Women and Imperial Dominion in Late Antiquity. University of California Press. p. 115. ISBN   978-0-520-06801-8.
  2. "Constantius III | Biography & Facts". Encyclopedia Britannica. Retrieved March 17, 2019.