Saint Naum

Naum (Bulgarian and Macedonian: Свети Наум, romanized: Sveti Naum), also known as Naum of Ohrid or Naum of Preslav (c. 830 – December 23, 910), was a medieval Bulgarian writer and missionary among the Slavs, considered one of the Seven Apostles of the First Bulgarian Empire. He was among the disciples of Cyril and Methodius and is associated with the creation of the Glagolitic and Cyrillic script. Naum was among the founders of the Pliska Literary School. Afterwards Naum worked at the Ohrid Literary School. He was among the first saints declared by the Bulgarian Orthodox Church after its foundation in the 9th century. The mission of Naum played significant role by transformation of the local Early Slavs into Bulgarians.

Source: Wikipedia — https://en.wikipedia.org/wiki/Saint_Naum