Deaths January 11 – Michael I, former Byzantine emperor January 25 – Gregory IV, pope of the Catholic Church Abdallah ibn Tahir, Muslim governor (or 845) Abu Ja'far Ashinas, Muslim general Alberik II, Frankish bishop Bera, count of Barcelona Bernard II, count of Poitiers Bernard I, duke of Septimania Chen Yixing, chancellor of the Tang Dynasty Ekkehard, Frankish nobleman Galindo Garcés, count of Aragon Hugh, illegitimate son of Charlemagne (b. 802) Merfyn Frych, king of Gwynedd (Wales) Mukhariq, Abbasid court singer Nithard, Frankish historian Rædwulf, king of Northumbria (approximate date) Tachibana no Hayanari, Japanese calligrapher (d. 782) Theodrada, Frankrish princess and abbess (or 853) References Sources