Possible Clues:

• 'Iron Chef America' chef Cat
• "The Last of the Mohicans" girl
• Countess on ''Downton Abbey''
• Lady Grantham’s given name on “Downton Abbey”
• Ring-shaped structure formed over millions of years
• Comics' Mrs. Dithers
• Former 'Iron Chef America' chef Cat __
• Countess Grantham on "Downton Abbey"
• Celebrity chef Cat ___
• Name hidden in "decorator"