Meaning of D' in English
1. de (used in French names as an elided form of de ): Charles Louis d'Albert.
2. di (used in Italian names as an elided form of di ): Gabriele d'Annunzio.
Pron. Spelling. contraction of do or did before you: How d'you like your eggs cooked? D'you go to the movies last night?
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012