The nursery rhyme that inspired The Queen Was in the Parlour is listed as what number in the Roud Folk Song Index?
The Queen Was in the Parlour:  Belonging to the Ruritanian romance genre, its title is drawn from a line in the nursery rhyme "Sing a Song of Sixpence". Sing a Song of Sixpence:  It is listed in the Roud Folk Song Index as number 13191.
13191