Korchagin
Korchagin is a surname of Russian origin. It is derived from the given name Korchak, which itself is thought to be a diminutive form of names like Prokhor or Kornily. The suffix "-agin" is a common patronymic ending in Russian, indicating "son of" or "belonging to". Therefore, Korchagin literally means "son of Korchak".
The name is most famously associated with Pavel Korchagin, the fictional protagonist of Nikolai Ostrovsky's 1932
Beyond the literary character, Korchagin exists as a given surname for individuals. It is found in Russia