Francis Scott Key (August 1, 1779January 11, 1843) was an American lawyer, author, and amateur poet from Frederick, Maryland and later Georgetown, D.C., near Washington, D.C. who wrote the lyrics for a poem entitled at first "The Defence of Fort McHenry", which when set to an old English gentlemens' society tune, eventually became the United States' national anthem, "The Star-Spangled Banner".
The Star-Spangled Banner, or the Great Garrison Flag, was the garrison flag that flew over Fort McHenry in Baltimore Harbor during the naval portion of the Battle of Baltimore during the War of 1812.
 Seeing the flag during the battle inspired Francis Scott Key to write the poem "Defence of Fort M'Henry", which, retitled with the flag's name from the closing lines of the first stanza and set to the tune of "To Anacreon in Heaven" by John Stafford Smith, later became the national anthem of the United States.
The Fort McHenry Tunnel is a four-tube, bi-directional tunnel that carries traffic on Interstate 95 underneath the Baltimore Harbor.
 The lowest point in the Interstate System under water, the tunnel is named for nearby Fort McHenry.
The Loudoun House, located in Lexington, Kentucky, is considered one of the largest and finest examples of Gothic Revival architecture in the state.
 Designed by New York architect Alexander Jackson Davis, the house was built in 1851 for Francis Key Hunt (1817–1879), who was named after his mother's cousin, Francis Scott Key.
Mary Pickersgill (born Mary Young; February 12, 1776 – October 4, 1857), was the maker of the Star Spangled Banner Flag hoisted over Fort McHenry during the Battle of Baltimore in the War of 1812.
 The daughter of another noted flag maker, Rebecca Young, Pickersgill learned her craft from her mother, and, in 1813, was commissioned by Major George Armistead to make a flag for Baltimore's Fort McHenry that was so large that the British would have no difficulty seeing it from a great distance.
 The flag was installed in August 1813, and, a year later, during the Battle of Baltimore, Francis Scott Key could see the flag while negotiating a prisoner exchange aboard a British vessel, and was inspired to pen the words that became the United States National Anthem.
USS "Fort McHenry" (LSD-43) is a "Whidbey Island"-class dock landing ship of the United States Navy.
 She was named for Fort McHenry, in Baltimore, Maryland, the 1814 defense of which inspired "The Star-Spangled Banner".
Frank Key Howard (1826 - 1872) (also cited as Francis Key Howard) was the grandson of Francis Scott Key and Revolutionary War colonel John Eager Howard.
 Howard was the editor of the "Daily Exchange", a Baltimore newspaper sympathetic to the Southern cause.
 He was arrested without a warrant just after midnight on September 13, 1861 at his home by U.S. Major General Nathaniel Prentice Banks on the direct orders of General George B. McClellan enforcing the policy of President Abraham Lincoln.
 (In his book he writes that he was told by the arresting officer that the order had come from Secretary of State William Seward.)
 The basis for his arrest was for writing a critical editorial in his newspaper of Lincoln's suspension of the writ of habeas corpus, and criticizing the fact that the Lincoln administration had declared martial law in Baltimore and imprisoned without charge George William Brown, the mayor of Baltimore, sitting U.S. Congressman Henry May, all the police commissioners of Baltimore, and the entire city council.
 Lincoln's suspension of habeas corpus in Maryland had already been declared unconstitutional by U.S. Supreme Court Chief Justice Roger Taney (Howard's great-uncle by marriage) in Ex parte Merryman, but Lincoln had ignored the federal court ruling.
 Howard was initially confined to Fort McHenry, the same fort his grandfather Francis Scott Key saw withstand a British bombardment during the War of 1812, which inspired him to write The Star Spangled Banner, which would become the national anthem of the United States of America.
 He was then transferred first to Fort Lafayette in Lower New York Bay off the coast of Brooklyn, then Fort Warren in Boston.
"The Star-Spangled Banner" is the national anthem of the United States of America.
 The lyrics come from "Defence of Fort M'Henry", a poem written on September 14, 1814, by the 35-year-old lawyer and amateur poet Francis Scott Key after witnessing the bombardment of Fort McHenry by British ships of the Royal Navy in Baltimore Harbor during the Battle of Baltimore in the War of 1812.
 Key was inspired by the large American flag, the Star-Spangled Banner, flying triumphantly above the fort during the American victory.
"The Anacreontic Song", also known by its incipit "To Anacreon in Heaven", was the official song of the Anacreontic Society, an 18th-century gentlemen's club of amateur musicians in London.
 Composed by John Stafford Smith, the tune was later used by several writers as a setting for their patriotic lyrics.
 These included two songs by Francis Scott Key, most famously his poem "Defence of Fort McHenry".
 The combination of Key's poem and Smith's composition became known as "The Star-Spangled Banner", which was adopted as the national anthem of the United States of America in 1931.
USS "Francis Scott Key" (SSBN-657), a "Benjamin Franklin"-class ballistic missile submarine, was the only ship of the United States Navy to be named for Francis Scott Key (1779–1843), an American lawyer, author, and amateur poet who wrote the poem "The Defense of Fort McHenry", which became the words to the United States' national anthem, "The Star-Spangled Banner".

Question: Francis Key Hunt was named after what American poet who wrote a poem entitled at first "The Defence of Fort McHenry"?
Answer: Francis Scott Key