Statistics for occurrence #1 of “Mr. McDuffie” in chapter 126 of C. Edwards Lester, Life and public services of Charles Sumner: Born Jan. 6, 1811. Died March 11, 1874.:

...hich, so far as the slave is concerned, he changes, on a subsequent day, to elevating, assuming still that it is ennobling to the whites,—which is simply a new version of the old assumption, by Mr. McDuffie , of South Carolina, that the institution of Domestic Slavery supersedes the necessity of an order of nobility.
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