The alleged Ioachim Chronicle, which has never been found, is part of the "Tatishchev information" (Russian: Татищевские известия, romanized: Tatishchevskie izvestiya), which is not to be trusted until it is supported by another source.
[2][3] The chronicle is believed to be a 17th-century compilation of earlier sources describing events in the 10th and 11th centuries concerning the Novgorod Republic and Kievan Rus'.
[4] The original chronicle was reportedly lost and the contents are known through Tatishchev's History of Russia (История Российская).
Indeed, Tatishchev's sources are so problematic, that Iakov Solomonovich Lur'e (1968) wrote of "'Tatishchev information' (data found only in that historian.
)"[6] Be that as it may, Tatishchev concluded that the chronicle was written by Ioakim Korsunianin, the first bishop of Veliky Novgorod (ca.