Statistics for occurrence #1 of “John Williams” in chapter 41 of Admiral David D. Porter, The Naval History of the Civil War.:

...aymaster, Arthur Burtis, Jr.; Acting-Master, F. Hopkins, Jr.; Acting-Ensigns, F. Wallace, S. Harding, Jr., and J. M. C. Reville; Acting-Master's Mates, Charles Hall. E. P. Blayne, E. S. D. Howland, John Williams and Thos. Stanfield; Engineers: Acting-Chief, Alex. McCausland; Acting-Second-Assistant, David McArthur; Acting-Third-Assistants, James Campbell, John Quinn and Win. McGrath; Gunner, Wm. Mowbry. ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
John Williams 462 5 36 1 0 user votes
John Williamson Palmer 33 0 9 0 0 user votes
John Williamson 10 0 0 0 0 user votes
John Williams Ashby 4 0 0 0 0 user votes
John Williams Hudson 4 0 0 0 0 user votes
John Williams Lawton 4 0 0 0 0 user votes
John Williams McCoubrey 4 0 0 0 0 user votes
John Williams Langley 2 0 0 0 0 user votes
Dr John Williamson Palmer 2 0 0 0 0 user votes
John Williams White 2 0 2 0 0 user votes
John Williams Green 1 0 1 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.