Onfim
Onfim (Russian: Онфим; Old Novgorodian: Онѳимє, romanized: Onthime; fl. c. 1220–60) was a boy who lived in the Russian city of Novgorod in the 13th century, sometime around 1220 or 1260. He left his notes and homework exercises scratched in soft birch bark, which was preserved in the clay soil of Novgorod.
Onfim, who was most likely six or seven at the time, wrote in the Old Novgorod dialect, a historical variety of Russian. Besides letters and syllables, he drew "battle scenes and drawings of himself and his teacher."