Statistics for occurrence #1 of “Port Royal” in chapter 2 of Admiral David D. Porter, The Naval History of the Civil War.:

...s Point to keep our ships from approaching Norfolk; others were sent to Hatteras Inlet, Ocracocke, Roanoke Island and other points in the sounds of North Carolina. Fifty-three of them were mounted at Port Royal , others at Fernandina and at the defences of New Orleans. They were met with at Fort Henry, Fort Donelson, Island No.10, Memphis, Vicksburg, Grand Gulf and Port Hudson. We found them up the Red R...
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.