825
Year 825 was a common year starting on Sunday of the Julian calendar.
Events
By place
India
- A group of Persio-Assyrian adherents of the Church of the East, under the leadership of two Persian bishops Prod and Sappor, reach Kerala, India and reside in Quilon.
- August - This year, on the first day of Chingam month, Kerala’s Kollam Era commences.
Europe
- Emperor Louis the Pious begins a military campaign against the Wends and Sorbs. Duke Tunglo surrenders his son as hostage, and submits to Frankish rule.
- Grímur Kamban becomes the first man to set foot in the Faroe Islands, and settles down in Funningur, on the northwest coast of Eysturoy.
- Murcia is founded by the emir of Cordoba Abd ar-Rahman II.
Britain
- Battle of Ellandun: King Egbert of Wessex defeats Beornwulf of Mercia near Swindon. The battle marks the end of the Mercian domination of southern England. The kingdoms of Kent, Surrey, Sussex and Essex submit to Wessex, and East Anglia acknowledges Egbert as overlord.
- King Hywel ap Rhodri of Gwynedd dies after an 11-year reign. The kingdom is seized by his grand-nephew, Merfyn Frych of Man.
- Battle of Gafulford: The men of Cornish Dumnonia clash with the West Saxons at modern-day Camelford.
By topic
Religion
- Borobudur, a Mahayana Buddhist Temple, is completed in Central Java.
Births
- Ariwara no Narihira, Japanese waka poet
- Charles, Frankish bishop and archchancellor
- Fujiwara no Yasunori, Japanese nobleman
- Landulf II, bishop and count of Capua
- Louis II, king of Italy and Holy Roman Emperor
- Muhammad ibn Abdallah, Muslim governor
- Ono no Komachi, Japanese poet
- Tsunesada, Japanese prince
Deaths
- Abu Ubaidah, Muslim scholar
- Hywel ap Rhodri, king of Gwynedd
- Ida of Herzfeld, Frankish noblewoman
- Liu Wu, general of the Tang Dynasty
- Máel Bressail mac Ailillo, king of Ulaid
- Song Ruozhao, Chinese scholar, lady-in-waiting and poet
- Rampon, count of Barcelona
- Welf, father of Judith of Bavaria
- Wihomarc, Breton chieftain