William Sydney Porter (September 11, 1862 – June 5, 1910), known by his pen name O. Henry, was an American writer. O. Henry's short stories are known for their wit, wordplay, warm characterization and clever twist endings.
William Sidney Porter was born on September 11, 1862, in Greensboro, North Carolina. His middle name at birth was Sidney; he changed the spelling to Sydney in 1898. His parents were Dr. Algernon Sidney Porter (1825–1888), a physician, and Mary Jane Virginia Swaim Porter (1833–1865). They were married on April 20, 1858. When William was three, his mother died from tuberculosis, and he and his father moved into the home of his maternal grandmother. As a child, Porter was always reading, everything from classics to dime novels; his favorite works were Lane's translation of One Thousand and One Nights, and Burton's Anatomy of Melancholy.