Statistics for occurrence #1 of “Rockville” in chapter 9 of Admiral David D. Porter, The Naval History of the Civil War.:

...me works (which proved to be deserted), Lieutenant Ammen proceeded with the Seneca five miles up the river and burned some cotton houses and out-buildings. A landing was made at the small town of Rockville in hopes of surprising a large body of the enemy's infantry, but they decamped in a great hurry, leaving in Commander Drayton's hands a sloop, loaded with cotton and provisions, large quantities of c...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Rockville (Indiana, United States) 7 0 3 0 0 user votes
Rockville (Massachusetts, United States) 1 0 1 0 0 user votes
Rockville (Ohio, United States) 1 0 1 0 0 user votes
Rockville (Virginia, United States) 1 0 1 0 0 user votes
Rockville (Alabama, United States) 0 0 0 0 0 user votes
Rockville (California, United States) 0 0 0 0 0 user votes
Rockville (Georgia, United States) 0 0 0 0 0 user votes
Rockville (Idaho, United States) 0 0 0 0 0 user votes
Rockville (Iowa, United States) 0 0 0 0 0 user votes
Rockville (Maine, United States) 0 0 0 0 0 user votes
Rockville (Minnesota, United States) 0 0 0 0 0 user votes
Rockville (Missouri, United States) 0 0 0 0 0 user votes
Rockville (Nebraska, United States) 0 0 0 0 0 user votes
Rockville (New York, United States) 0 0 0 0 0 user votes
Rockville (New York, United States) 0 0 0 0 0 user votes
Rockville (New Zealand) 0 0 0 0 0 user votes
Rockville (Ohio, United States) 0 0 0 0 0 user votes
Rockville (Ohio, United States) 0 0 0 0 0 user votes
Rockville (Ohio, United States) 0 0 0 0 0 user votes
Rockville (Ohio, United States) 0 0 0 0 0 user votes
Rockville (Oregon, United States) 0 0 0 0 0 user votes
Rockville (Oregon, United States) 0 0 0 0 0 user votes
Rockville (Pennsylvania, United States) 0 0 0 0 0 user votes
Rockville (Pennsylvania, United States) 0 0 0 0 0 user votes
Rockville (Pennsylvania, United States) 0 0 0 0 0 user votes
Rockville (Pennsylvania, United States) 0 0 0 0 0 user votes
Rockville (Pennsylvania, United States) 0 0 0 0 0 user votes
Rockville (Pennsylvania, United States) 0 0 0 0 0 user votes
Rockville (Pennsylvania, United States) 0 0 0 0 0 user votes
Rockville (Pennsylvania, United States) 0 0 0 0 0 user votes
Rockville (Pennsylvania, United States) 0 0 0 0 0 user votes
Rockville (Pennsylvania, United States) 0 0 0 0 0 user votes
Rockville (Pennsylvania, United States) 0 0 0 0 0 user votes
Rockville (Pennsylvania, United States) 0 0 0 0 0 user votes
Rockville (Pennsylvania, United States) 0 0 0 0 0 user votes
Rockville (Rhode Island, United States) 0 0 0 0 0 user votes
Rockville (South Carolina, United States) 0 0 0 0 0 user votes
Rockville (Tennessee, United States) 0 0 0 0 0 user votes
Rockville (Utah, United States) 0 0 0 0 0 user votes
Rockville (Vermont, United States) 0 0 0 0 0 user votes
Rockville (West Virginia, United States) 0 0 0 0 0 user votes
Rockville (West Virginia, United States) 0 0 0 0 0 user votes
Rockville (Wisconsin, United States) 0 0 0 0 0 user votes
Rockville (Wisconsin, 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.