Possible Clues:

• DKNY's D
• Do get her up, Madam, in Italy
• Woman, in Venezia
• She played James's wife in It's a Wonderful Life
• County singer Fargo
• American poet associated with Yeats and Horace
• "La __ è mobile": "Rigoletto" aria
• 1958 hit whose B-side was 'La Bamba'
• 1959 hit by Ritchie Valens
• Poet's answer at last for English lady