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APPELLATIONS AND EPITHETS

Generally capped and not quoted if well established:
            Abe Lincoln, the Great Emancipator
            Jenny Lind, the Swedish Nightingale

If less well established, lowercase within quotation marks:
            Perle Mesta, "the hostess with the mostest."
            Teddy considers himself the "bull of the woods."
            His reward was to be dubbed "his rotundity."

See also NICKNAMES OF PERSONS.