Statistics for occurrence #1 of “John Clark” in chapter 46 of Admiral David D. Porter, The Naval History of the Civil War.:

...eutenant, Theodore B. Du-Bois; Acting-Assistant Surgeon, I. C. Whitehead; Acting-Assistant Paymaster, G. R. Martin; Acting-Ensigns, R. E. Anson and Alfred Hornsby; Acting-Master's Mates, James Brown, John Clark and J. T. Thompson; Engineers: Acting-First-Assistant, J. Tucker; Acting-Third-Assistants, E. H. Slack, J. Shields and J. Pearce. Acting-Volunteer-Lieutenant, L. W. Pennington; Acting-Assi...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
John Clark 158 5 20 3 0 user votes
John Clarke 106 0 6 0 0 user votes
John Clark Howard 8 0 0 0 0 user votes
William John Clarke 3 0 1 0 0 user votes
John Clark Esq 2 0 0 0 0 user votes
John Clarke Howard 2 0 0 0 0 user votes
John Clark Ridpath 2 0 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.