Statistics for occurrence #1 of “William Johnson” in entry warren-sir-peter of Harper's Encyclopedia of United States History:

...eir fleet. Admiral Warren married the eldest daughter of Stephen De Lancey, of New York, and became the owner of a large tract of land in the Mohawk region, in charge of which he placed his nephew, William Johnson , afterwards Sir William. Sir Peter died in Ireland, July 29, 1752.
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Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
† William Johnson 412 100 52 24 0 user votes
William Johnson Pegram 140 0 10 0 0 user votes
Man William Johnson 104 0 0 0 0 user votes
Sir William Johnson 5 5 1 1 0 user votes
William Johnson James John 3 0 1 0 0 user votes
William Johnson Twining 2 2 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.