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

...re's parties, the ministerial parties; for Decazes came occasionally, and Barante, Guizot, etc., were there nearly every Tuesday night; and as this convocation happened on one of the evenings of Mad. de Duras ', I two or three times witnessed singular contrasts on going from one to the other, just as the great question of the change of Ministry, which lasted above a fortnight, was in the agony of agitation...
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.