This blog post profiles one of the lesser-known Confederate officers, a relative of the famous “Stonewall” Jackson.  His legal career seems to have been quite solid, but the intervening war years gave the man his (undeserved?) nickname.  Here is a tidbit:

He continued in the department of Western Virginia, frequently opposing Federal incursions, his command increasing to the dimensions of a small brigade of cavalry, during the remainder of 1863. His lackluster pursuit of Averell’s raiders during the August 1863 raid that culminated in the Battle of White Sulphur Springs earned Jackson the unflattering moniker of Mudwall. While pursuing Averell through Huntersville, Jackson’s troopers found “Mudwall Jackson” scrawled on the walls of the old county courthouse, “the principal feature of which was a complaint that ‘Mudwall Jackson’ would not fight,” as Confederate soldier John McNeel reported. McNeel saw this graffiti a few days after Averell’s men evacuated Huntersville, “and it was understood by the Confederate soldiers as having been put there by a Yankee soldier, and as we Confederates understood it at the time, the animus of the verse was because the dead ‘Stonewall’ had been so hard on the Yankees, and the live ‘Mudwall’ had escaped their net.”

http://civilwarcavalry.com/?p=2962