High Quality Content by WIKIPEDIA articles! Christopher Smart (11 April 1722 21 May 1771), also known as "Kit Smart", "Kitty Smart", and "Jack Smart", was an English poet. He was a major contributor to two popular magazines and a friend to influential cultural icons like Samuel Johnson and Henry Fielding. Smart, a high church Anglican, was widely known throughout London. Smart was infamous for his role as "Mrs. Mary Midnight" and widespread accounts of his father-in-law, John Newbery, locking him away in a mental asylum for many years over Smart's supposed religious "mania". Even after Smart's eventual release, a negative reputation continued to pursue him as he was known for incurring more debt than he could pay off; this ultimately led to his confinement in debtor's prison until his death. Smart's two most widely-known works are A Song to David and Jubilate Agno, both at least partly written during his confinement in asylum. However, Jubilate Agno was not to be published until 1939 and A Song to David received mixed reviews until the 19th century.