Statistics for occurrence #1 of “Marlborough” in chapter 27 of Admiral David D. Porter, The Naval History of the Civil War.:

...the result of this last expedition, was not discouraged He saw that this was the last attempt that could be made in this direction, and turned his attention to other ways, believing, with the Duke of Marlborough , that though all trials might fail, there was always one way left to get into a fortified city. So evident was it to the Confederates that in both the Yazoo Pass and the Steele's Bayou expedition...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Marlborough (New Hampshire, United States) 1 0 1 0 0 user votes
Marlborough (Connecticut, United States) 0 0 0 0 0 user votes
Marlborough (Guyana) 0 0 0 0 0 user votes
Marlborough (Michigan, United States) 0 0 0 0 0 user votes
Marlborough (Missouri, United States) 0 0 0 0 0 user votes
Marlborough (Missouri, United States) 0 0 0 0 0 user votes
Marlborough (New Zealand) 0 0 0 0 0 user votes
Marlborough (Queensland, Australia) 0 0 0 0 0 user votes
Marlborough (United Kingdom) 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.