Statistics for occurrence #1 of “Porterfield” in chapter 20 of Benson J. Lossing, Pictorial Field Book of the Civil War. Volume 1.:

...an dispersed. Kelley's troops returned to camp, and the impression went abroad that the National forces would not leave the line of the Baltimore and Ohio Railway. Word to this effect was sent to Porterfield by the secessionists in Grafton, and thus aid was unintentionally given to the invaders of Virginia. the new plan was immediately executed. The forces at Grafton were arranged in two columns, ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Porterfield 134 31 36 3 0 user votes
G. A. Porterfield 46 0 4 0 0 user votes
George A. Porterfield 27 0 5 0 0 user votes
George D. Porterfield 27 0 1 0 0 user votes
George Porterfield 23 0 1 0 0 user votes
Colonel Porterfield 18 0 0 0 0 user votes
Charles Porterfield 6 0 0 0 0 user votes
G. W. Porterfield 2 0 0 0 0 user votes
Geo Porterfield 2 0 2 0 0 user votes
J. Porterfield 2 0 0 0 0 user votes
S. A. Porterfield 2 0 0 0 0 user votes
Alexander Porterfield 1 0 1 0 0 user votes
William Porterfield 1 0 1 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.