Statistics for occurrence #1 of “de Duras” in chapter 13 of George Ticknor, Life, letters and journals of George Ticknor:

...f the Bishop, I should certainly have suffered a little in my temper from her attacks, supported by a corps of petits Marquis de l'ancien regime, who were always of her coterie. . . . The Duchess de Duras ' society was ultra too, but ultra of a very different sort. It was composed of much that is distinguished in the present management of affairs, to which she has been able to add many men of letters...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
De Duras 40 35 6 3 0 user votes
Duchesse De Duras 2 2 0 0 0 user votes
Due De Duras 2 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.