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

...e ranks of their opponents. Kelley was hurrying on. The booming of Lander's cannon had invigorated his men. His guide was treacherous, and instead of leading him out from the hills in the rear of Porterfield 's camp, he had brought him from the mountain road upon the flank of the now flying insurgents. He pushed rapidly over a ridge, and fell furiously upon the fugitives, who were driven in wild confusi...
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.