Summer on the Lakes, in 1843
“After spying about some time, he found it could only be the sunset, and looking, too, a moment, he said approvingly “that sun looks well enough”: a speech worthy of Shakspeare's Cloten, or the infant Mercury, up to everything from the cradle, as you please to take it.”
Fuller, Margaret. Summer on the Lakes, in 1843. Boston: Little, Brown & Co., 1844.
Inferred Fuller names 'Shakspeare's Cloten' explicitly. Cloten is the boorish, dense, and vulgar stepson of Cymbeline in Shakespeare's late romance Cymbeline.