840s births

king of Wessex (r. 872–901)

pope

190px|thumb|right|alt=Árpád's statue at the Heroes' Square|Árpád's statue at the Heroes' Square (Budapest) Árpád (; 845 – 907) was the head of the confederation of the Magyar tribes at the turn of the 9th and 10th centuries. He might have been either the sacred ruler or kende of the Hungarians, or their military leader or gyula, although most details of his life are debated by historians, because different sources contain contradictory information. Despite this, many Hungarians refer to him as the "founder of our country", and Árpád's preeminent role in the Hungarian conquest of the

Viking settler of Iceland

King of Wessex (r. 865–871)

Holy Roman Emperor from 915 to 924

Spanish King

eleventh of the Twelve Shia Imams

Abu’l-ʿAbbās Aḥmad ibn Jaʿfar ibn Muḥammad ibn Hārūn al-Muʿtamid ʿalā’Llāh (; – 14 October 892), better known by his regnal name '''al-Muʿtamid ʿalā 'llāh''' (, 'Dependent on God'), was the caliph of the Abbasid Caliphate from 870 to 892. His reign marks the end of the "Anarchy at Samarra" and the start of the Abbasid restoration, but he was largely a ruler in name only. Power was held by his brother al-Muwaffaq, who held the loyalty of the military. Al-Mu'tamid's authority was circumscribed further after a failed attempt to flee to the domains controlled by Ahmad ibn Tulun in late 882, and he

queen consort of Wessex and countess of Flanders

ruler of Moravia

Benedictine monk and musician

Frankish noble, King of lower Bourgundy

Emir of Córdoba from 886 to 888

King of Aquitaine from 855

Byzantine Empress consort (c. 840 – c. 882)

Saint Richardis (), also known as Richgard, Richardis of Swabia and Richarde de Souabe in French ( 840 – 18 September, between 894 and 896 AD), was empress of the Carolingian Empire as the wife of Charles the Fat. She was renowned for her piety and was the first abbess of Andlau. Repudiated by her husband, Richardis later became a Christian model of devotion and just rule. She was canonised in 1049.

Doge of Venice (842-887)

Frankish Queen

Saxon queen

French philosopher and theologian

Chinese poet, Daoshi

thumb|Sosei Hōshi by Kanō Tan'yū, 1648

Italian noble

High King of Ireland

9th century Basque princess from the Kingdom of Pamplona

Theodard was also the murdered bishop Theodard of Maastricht.

Abbasid army commander (845/6–933)

French abbot

Frankish noble

Chinese poet of the Tang and Min dynasty

Abed Zahid of Baghdad scientists

German noble

Grammarian of Basrah

Abbasid official and vizier (844/5–891)

Ibrahim ibn Jaʽfar al-Mutawakkil (; died 866), better known by his laqab '''al-Mu'ayyad''' (), was an Abbasid prince, the third son of the Abbasid caliph al-Mutawakkil, He was the governor of Syria from 850 to 861 and also for a time third-in-line to the Abbasid throne.

emir of Tabaristan, Zaydi Imam

German Roman Catholic saints