Statistics for occurrence #1 of “Porterfield” in chapter 4 of Maj. Jed. Hotchkiss, Confederate Military History, a library of Confederate States Military History: Volume 3, Virginia:

..., having but one of his men and a boy who was visiting his camp, wounded. Kelley himself was seriously wounded, but there were no other casualties. For lack of cavalry the Federals did not pursue Porterfield . The advantage gained by the Federals was an advance of 20 miles southward, giving better protection to the Baltimore & Ohio, and forcing Porterfield to retreat to Beverly, some 30 miles fart...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
George D. Porterfield 27 27 1 1 0 user votes
Porterfield 134 0 36 0 0 user votes
G. A. Porterfield 46 0 4 0 0 user votes
George A. Porterfield 27 3 5 1 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.