Citations:rattlepate

Noun

 * 1857, Charles Kingsley, Two Years Ago:
 * "I ought to have told you of that doctor a fortnight ago; but, rattle-pate as I am, I forgot all about it."
 * 1897, L. T. Meade, Wild Kitty:
 * "Do stop talking, Kitty. You are the most awful rattlepate"
 * 1904, L. Frank Baum, A Kidnapped Santa Claus:
 * And there are others who resent your making children happy and who sneer at you and call you a foolish old rattlepate!
 * 1921, Ruth Plumly Thompson, The Royal Book of Oz:
 * "Can't, with a rattlepate like that." The A-B-Sea Serpent nodded glumly in the Rattlesnake's direction.

Adjective

 * 1868, Louisa May Alcott, Little Women:
 * “It isn’t proper to be gadding about so late with a rattlepated boy like ...”