Statistics for occurrence #1 of “McClernand” in part 12.41, chapter 12.47 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War: The Opening Battles. Volume 1.:

...s reinforced by several of Polk's. Here, again, the Federal line had to give way, with the loss of some guns. By 7:30 Hurlbut, sending Veatch's brigade of his division to the help of Sherman and McClernand , had gone, in person with his two other brigades, to the support of Prentiss, and with him went 8 companies of cavalry and 3 batteries. Prentiss's division was met, however, in a somewhat fragmenta...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
John A. McClernand 2,049 278 51 4 0 user votes
McClernand 941 0 155 0 0 user votes
J. A. McClernand 348 0 6 0 0 user votes
Jonathan A. McClernand 108 0 0 0 0 user votes
John Alexander McClernand 40 0 6 0 0 user votes
Generals McClernand 20 0 0 0 0 user votes
Geas McClernand 6 0 0 0 0 user votes
Gen McClernand 4 0 0 0 0 user votes
John McClernand 2 0 2 0 0 user votes
Gen John A. McClernand 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.