What ballad is the lullaby written and composed by Effie Crockett based on?
Effie Crockett:  She is credited with having written and composed the lullaby "Rock-a-bye Baby"; by some accounts she created the song in 1872 while babysitting. Rock-a-bye Baby:  The melody is a variant of the English satirical ballad Lillibullero .
Lillibullero