The main reliable accounts of Gannibal 's life come from The Moor of Peter the Great published after Pushkin 's death in 1837 .
The Moor of Peter the Great is pushkin 's unfinished biography of his great - grandfather .
The main reliable accounts of Gannibal 's life come from The Moor of Peter the Great , Pushkin 's unfinished biography of his great - grandfather , published after Pushkin 's death in 1837 .