"Old Lady Who Swallowed a Fly" is a children's rhyme and song of the cumulative type (like "The Twelve Days of Christmas". The song was written by Rose Bonne (lyrics) and Alan Mills and copyrighted in 1952. At that time it was entitled simply "I Know an Old Lady". Three versions of the rhyme were collected in the journal Hoosier Folklore in December 1947. It was printed in Seeger's Bells of Rhymney (1964), It was recorded by Pete Seeger on Birds Bugs and Little Fishes (1955), Burl Ives on Folk Songs, Dramatic and Humorous (1953), Alan Mills on Animals (1956). I probably learned it from Pete Seeger.