820 deaths

'''Al-Shafi'i''' (; ;767–820 CE) was a Muslim scholar, jurist, muhaddith, traditionist, theologian, ascetic, and eponym of the Shafi'i school of Sunni Islamic jurisprudence. He is known to be the first to write a book upon the principles of Islamic jurisprudence, having authored one of the earliest work on the subject: al-Risala. His legacy and teaching on the matter provided it with a systematic form, thereby "fundamentally influencing the succeeding generations which are under his direct and obvious impact," and "beginning a new phase of the development of legal theory."

Byzantine emperor (lived 775–820)

emperor of the Tang Dynasty

Vascon noble

Visigoth noble

King of Picts

Abbasid governor of Egypt from 815 to 820

King of Munster

Tang Dynasty poet