Statistics for occurrence #1 of “De Quincy” in chapter 14, page 102 of Edward L. Pierce, Memoir and letters of Charles Sumner: volume 2:

...he caryatides that supports the Battle of the Saracens; and under it is inscribed, Christiani Imperii Propagator.Other caryatides are Charlemagne and Lothaire. You will find some mention of this in De Quincy 's Histoire de la vie et des ouvrages de Raphael, p. 176; though Lanzi makes no mention of it; nor Vasari, I think. P. S. Let me take the great liberty, in this duplication of postscript, to ment...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
De Quincy 10 8 0 0 0 user votes
Thomas De Quincy 4 0 0 0 0 user votes
M. De Quincy 2 0 0 0 0 user votes

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