Statistics for occurrence #1 of “McClernand” in chapter 4.10 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 1: The Opening Battles.:

...lag-Officer Foote. When General Grant arrived an hour later, Foote turned over the Fort to him and returned to Cairo with his disabled gunboats. With waving banners the divisions of Smith and McClernand marched across country on February 12th, arriving at noon and encircling the doomed Fort ere nightfall. Smith was stationed on the left and McClernand on the extreme right, near the village of Dove...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
John A. McClernand 2,049 21 51 1 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.