It is not, because a haiku is "A three-line poem in any language, with five syllables in the first and last lines and seven syllables in the second, usually with an emphasis on the season or a naturalistic theme." and Alone by Edgar Allan Poe is much more than three lines.
It is Edgar Allan Poe
Alone
The Civil War
he wrote it to explain his life
John Allan is Edgar Allan Poe's foster father.
It is widely believed that Edgar Allan Poe was allergic to alcohol. New discoveries have found that a drink of alcohol may have been what killed Poe.
Edgar Allan Poe married to Virginia Eliza Clemm Poe in 1836
Edgar Allan Poe.
Edgar Allan Poe was born on January 19, 1809.
Edgar Allan Poe was born on January 19, 1809
Yes, Edgar Allan Poe married to Virginia Eliza Clemm Poe in 1836
The name of Edgar Allan Poe's foster mother was Frances Allan.