What happened in 820?
Rebellion of Thomas the Slav, Ādi Shankara and Al-Shafi'i — among 18 events recorded in 820. A further 2 events are dated only to the wider period.
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People 11
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Ādi Shankara died
An Indian philosopher and theologian who consolidated the doctrine of Advaita Vedanta and revitalized Sanskrit scholasticism.
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Al-Shafi'i died
Arab Muslim theologian, writer and scholar (767–820)
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Theodore Abu-Qurrah died
Greek theologian and bishop
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Song Ruoshen died
Tang Dynasty poet
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John VIII born
Born in Rome. Head of the Catholic Church from 872 to 882.
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Nicholas I born
Born in Rome. Pope.
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Al-Baladhuri born
Born in Baghdad. Abbasid-era Muslim historian (820-892).
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Ibn Khordadbeh born
Born in Khorasan. Persian geographer and official (died 913).
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Vímara Peres born
Born in A Coruña. Count of Portugal.
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Emperor Xianzong of Tang died
Died in Xi'an. Emperor of the Tang Dynasty.
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Rhodri Mawr born
Born in Isle of Man. King of Gwynedd who unified much of Wales and defeated Viking incursions (820–878).
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Social Movements & Revolutions 1
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Rebellion of Thomas the Slav
821–823 rebellion
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Architecture & Engineering 2
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Seligenstadt Abbey
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San Severo
Building in Venice, Italy
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Dated to the wider period
Wikidata records these 2 entries only to a century, decade or millennium rather than to a specific year. They are listed here because 820 is where that broader date falls, not because they are known to have happened in 820.
9th century 1
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Hungarian invasions of Europe
Series of conflicts between Hungary and other European powers
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820s 1
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Emirate of Crete founded
Emirate of Crete was founded, with its capital at Heraklion.
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