Paulinus II of Aquileia was an 8th-century priest, poet, and theologian who served as the Patriarch of Aquileia from 787 until his death in 802. A prominent scholar during the Carolingian Renaissance, he was a close associate of Charlemagne and spent time at the royal court as a master of grammar. He played a vital role in defending orthodox doctrine against Adoptionism and was instrumental in the peaceful conversion of the Avars and alpine Slavs, earning him the title of apostle of the Slovenes.