How might Dupin be a double for Poe himself?

Dupin admits to the prefect that he is "guilty of certain doggerel myself" when the subject of poetry arises. Poe was a prolific poet.

Dupin is a highly educated, scholarly, and intelligent man with deep knowledge of mathematics, philosophy, deduction, physics, and language. Poe had a very good early education at Stoke Newington outside London and briefly studied at the University of Virginia and West Point. Though troubled, Poe was clearly highly intelligent and a...

Dupin admits to the prefect that he is "guilty of certain doggerel myself" when the subject of poetry arises. Poe was a prolific poet.

Dupin is a highly educated, scholarly, and intelligent man with deep knowledge of mathematics, philosophy, deduction, physics, and language. Poe had a very good early education at Stoke Newington outside London and briefly studied at the University of Virginia and West Point. Though troubled, Poe was clearly highly intelligent and a creative thinker, like Dupin. Dupin surrounds himself with books and musical instruments, items that were certainly a major interest of Poe's.

Dupin is a man who had been born into wealth and position but has been reduced to genteel poverty. For a relatively brief period in Poe's life, he was taken in by John and Frances Allan, a wealthy Richmond couple who fostered him, took him to England, and arranged for his education. After Frances's death, John Allan disavowed Poe, who then fell into poverty.