Saint Adrian III or Hadrian III was Pope from 17 May 884 to his death. According to Jean Mabillon, his birth name was Agapitus.
He was born at Rome. He died in July 885 at San Cesario sul Panaro (Modena) not long after embarking on a trip to Worms, in modern Germany. The purpose the journey was to attend an Imperial Diet after being summoned by the Frankish King Charles III, the Fat, to settle the succession to the Holy Roman Empire and discuss the rising power of the Saracens. He is also known to have written a letter condemning the Christians of both Muslim-ruled and Christian-ruled parts of Spain for being too friendly with the Jews in these lands.
His death and subsequent burial in the church of San Silvestro Nonantola Abbey near Modena is commemorated in the sculpted reliefs (c. 1122) that frame the doorway of this church. His relics are found near the high altar here. His cult was confirmed in 1891, and his feast day is 8 July.