I did check the MO Archives Soldiers Records online, which is how I found Gian Shrum. Not sure he's an ancestor, but I just starting exploring this line and he seems to be connected (husband of a gggaunt)...Gian Shrum signed on to Joel S Wright's battalion, mustered in Dec 6 1862 in Butler Co by Capt Newberry. A note on the card says "name appears only on muster-in roll above company". No other info on the card.
The family was in Pleasant Gap, Bates Co in 1860, and I understand they moved to Cooper Co during the war, possibly to the town of Blackwater. But how Gian may have come to Bulter Co, I don't know. I understand these counties were hard hit during the war. His widow remarried in Blackwater in 1869.
If you like a puzzle, I'd appreciate your help, esp any info that may help me determine where/when he died. Thanks so much, again!