Statistics for occurrence #1 of “Rockingham” in chapter 17 of George Bancroft, History of the United States from the Discovery of the American Continent, Vol. 7, 4th edition.:

...ral venality, Edmund Burke was displaced. Lord Varney, who had hitherto gratuitously brought him into parliament, had fallen into debt, and instead of carrying along his investment in the chance of Rockingham 's return to the ministry, he turned his back on deferred hopes and friendship, and pocketed for his borough the most cash he could get. Burke next coquetted with Wilkes for support at Westminster...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Rockingham 392 20 2 0 0 user votes
Richard Rockingham 2 0 2 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.