Theory:

William Sydney Porter, also known as O. Henry, was born on 11 September 1862 in Greensboro, North Carolina. He was a famous American short story writer. He was known for his intelligence, story-telling character and musical talents. Henry's parents were Algernon Sidney Porter (a physician) and Mary Jane Virginia Swaim Porter.
 
Henry did his schooling from his aunt Evelina Maria Porter's elementary school in 1876. After completing his elementary education, Henry joined Lindsey Street High School. Then he started working in his uncle's drug store (medical shop or pharmacy) in Greensboro in 1876.
 
O. Henry wrote numerous short stories. He had a deep affection for the city (New York), which he called "Bagdad-on-the-Subway". Many of his stories take place in New York City, while others are set in small towns or other cities.
 
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William Sydney Porter
 
Some of his most important works are:
  • The Duplicity of Hargraves (1902)
  • A Retrieved Reformation (1903)
  • The Cop and the Anthem (1904)
  • The Gift of the Magi (1905)
  • The Ransom of Red Chief (1907)
William Sydney Porter died on June 5, 1910, in New York.