Statistics for occurrence #1 of “Port Royal” in chapter 34 of Admiral David D. Porter, The Naval History of the Civil War.:

...m, sir, very respectfully, your obedient servant, Charles Steedman, Commander. Flag-Officer S. F. Dupont, Commander-in-Chief of Naval Forces, etc., etc. United States Gun-Boat Seneca, Port Royal , S. C., Nov. 15, 1861. Sir-In obedience to your order of this date, I nave the honor to make the following report: On Monday, the 4th, this vessel entered Port Royal, and sounded the channel ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Port Royal (South Carolina, United States) 2,928 130 170 6 0 user votes
Port Royal (Jamaica) 4 0 4 0 0 user votes
Port Royal (Georgia, United States) 2 0 0 0 0 user votes
Port Royal (Alabama, United States) 0 0 0 0 0 user votes
Port Royal (Florida, United States) 0 0 0 0 0 user votes
Port Royal (Kentucky, United States) 0 0 0 0 0 user votes
Port Royal (Pennsylvania, United States) 0 0 0 0 0 user votes
Port Royal (Pennsylvania, United States) 0 0 0 0 0 user votes
Port Royal (Tennessee, United States) 0 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.