819

Year 819 (DCCCXIX) was a common year starting on Saturday of the Julian calendar.

819 in various calendars

Gregorian calendar	819 DCCCXIX
Ab urbe condita	1572
Armenian calendar	268 ԹՎ ՄԿԸ
Assyrian calendar	5569
Balinese saka calendar	740–741
Bengali calendar	225–226
Berber calendar	1769
Buddhist calendar	1363
Burmese calendar	181
Byzantine calendar	6327–6328
Chinese calendar	戊戌年 (Earth Dog) 3516 or 3309     — to — 己亥年 (Earth Pig) 3517 or 3310
Coptic calendar	535–536
Discordian calendar	1985
Ethiopian calendar	811–812
Hebrew calendar	4579–4580
Hindu calendars
- Vikram Samvat	875–876
- Shaka Samvat	740–741
- Kali Yuga	3919–3920
Holocene calendar	10819
Iranian calendar	197–198
Islamic calendar	203–204
Japanese calendar	Kōnin 10 (弘仁１０年)
Javanese calendar	715–716
Julian calendar	819 DCCCXIX
Korean calendar	3152
Minguo calendar	1093 before ROC 民前1093年
Nanakshahi calendar	−649
Seleucid era	1130/1131 AG
Thai solar calendar	1361–1362
Tibetan calendar	ས་ཕོ་ཁྱི་ལོ་ (male Earth-Dog) 945 or 564 or −208     — to — ས་མོ་ཕག་ལོ་ (female Earth-Boar) 946 or 565 or −207

Artist's rendition of Ljudevit Posavski

Events

By place

Europe

• Spring – Emperor Louis I marries Judith of Bavaria in Aachen.^[1] She becomes his second wife and Empress of the Franks. Like many of the royal marriages of the time, Judith is selected through a bridal show.
• Ljudevit, duke of the Slavs in Lower Pannonia, raises a rebellion against the Frankish Empire. Louis I sends an army led by Cadolah of Friuli, but is defeated by the Pannonian Slavs.
• Battle of Kupa: Ljudevit defeats the Frankish forces led by Borna, a vassal of Louis I. He escapes with the help of his elite bodyguard. Ljudevit uses the momentum and invades the Duchy of Croatia.
• Nominoe, a noble Briton, is appointed by Louis I as count of Vannes in Brittany (approximate date).

Abbasid Caliphate

• August 11 – Caliph Al-Ma'mun returns to Baghdad, securing the city's place as the capital of the Abbasid Caliphate.
• Abbasid caliph Al-Ma'mun dismisses Al-Hasan ibn Sahl as governor of al-Iraq.
• Ghassan ibn Abbad, the Abbasid governor of Khorasan rewards the Samanid brothers, Nuh, Ahmad, Yahya and ilyas for their aid against the rebel Rafi ibn al-Layth, rewarding them each important cities and territories, respectively Samarkand, Farghana, Tashkent and Herat, to govern under Abbasid suzerainty. This becomes the basis for the formation of the Samanid dynasty which will rule Khorasan for a century.

Births

• Martianus Hiberniensis, Irish monk and calligrapher (d. 875)

Deaths

• March 8 – Li Shidao, Chinese warlord
• Áed Oirdnide, king of Ailech (Ireland)
• Cadolah, duke of Friuli (Italy)
• Cairell mac Fiachnai, king of Ulaid (Ireland)
• Cheng Yi, chancellor of the Tang Dynasty
• Hisham ibn al-Kalbi, Arab historian (b. 737)
• Liu Zongyuan, Chinese poet and official (b. 773)