Statistics for occurrence #1 of “Mr. Mason” in chapter 278 of Rebellion Record: a Diary of American Events: Documents and Narratives, Volume 1.:

...the Southern commissioners, disheartened by the coolness with which their overtures were received, and also by the fate of the Lopez expedition, returned discomfited to the United States. In 1857 Mr. Mason , of Virginia, announced as a fact on the floor of the Senate that the British Government had changed its opinion on the slavery question; but an early occasion was taken by that government to contrad...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  

† 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.