Who was John Quincy Daugherty, Sr.

I am confused by the term carpetbagger and the use of it to describe John Quincy Daugherty.  A carpetbagger, for all readers who had this term eradicated from their education, was a Northerner that came to the south (especially during the Reconstruction Era) to profit from the weak political system. It was derogatory word used to describe a vulture like relationship with the southern population.  
It also included those who were loyal to the union appointed into political or legal positions.  Which is fabulous for the Appointed ones, but for those who were established and had been digging in the dirt and defending themselves from cattle rustlers, indian attacks and diseases, I can imagine the pioneers saw the appointed sheriff's and deputies like an oppressive outsider.  

I wanted to know the damage done by the killing of this lawman. The truth.  So I began to research John Quincy Daugherty and came up with important documents.   First the application from Sarah Daugherty for her husband's civil war pension. 

From this document, I can tell that John Quincy Daugherty was a member of the First Texas Calvary (Arizona Brigade....they were originally called the Arizona Brigade because they were formed to help the war efforts in Arizona, but never sat foot in Arizona).  1st Battalion had some controversial moments (like getting the local indian together for "peace talks" and then slaughtering the adults in their drunken state and selling the children into slavery), and some were known for dragging out German men who were for the Union and hanging them (supported by Quattrails men and the  Die Haengebande or hanging band), but my guess is John Quincy Daugherty fought in the horrible battles of  Poison Springs (April 18, 1864) (where hundreds black ex-slaves fighting for the Union were slaughtered, scalped and mutilated), Massard’s Prairie (July 27, 1864) and Cabin Creek (September 19, 1864) among many other skirmishes along the Texas and New Mexico areas.  

 
He had married Sarah Ann when she they were both 22 years old.  
He fought for the Confederacy.  So that, in my opinion, makes him the least likeliest carpetbagger.  Perhaps he was seen as an interloper.  He had purchased land on the Leona, across from the Owens.  I read somewhere that their were tensions between the Daughertys and the Owens. I find this to be amazing.  When did anyone have time to hate anyone, with scratching their next meal out of the dirt and fighting Indians?  
I recently found a picture of him, but I try not to judge the old photos too harshly.  I know if I was to sit still for over 2 minutes, I would look terribly pinch-faced.  I imagine him to be a fierce fighter, tolerant of little nonsense.  I also can imagine the horror of war he was exposed to and the post traumatic syndrome he suffered.  His murder left his wife and five children, one who was not born yet.