851 deaths

Nominoe or Nomenoe (; ; c 800,  7 March 851) was the first Duke of Brittany from 846 to his death. He is the Breton pater patriae and to Breton nationalists he is known as '''' ("father of the country").

Holy Roman empress

Ebbo, Ebo or Epo ( – 20 March 851) was the Archbishop of Rheims from 816 until 835 and again from 840 to 841. He was born a German serf on the royal demesne of Charlemagne. He was educated at his court and became the librarian and councillor of Louis the Pious, king of Aquitaine, son of Charlemagne. When Louis became emperor, he appointed Ebbo to the see of Rheims, then vacant after the death of Wulfaire.

Italian prince

Prince of Salerno

Coptic Orthodox Pope of Alexandria, Egypt

chief of security in Baghdad

9th century Abbasid governor of Damascus and Egypt

prisoner

Spanish monk

King of Munster

9th-century Irish monarch