This is not certain, but there is in the "Official Records" series 1, vol. 48, part 1, p. 136, a report that a patrol of LT Robert Davis, Co. F. 2nd Cavalry MSM from the Cape Girardeau base sometime between March 9 and March 15, 1865 killed a "Lieutenant Reed of Howard's guerrilla company, and 5 men, and capturing 2 horses, with no casualty on his side." The location of this action or actions is not given, but Davis' patrol rode through Bollinger, Wayne, and Stoddard Counties, which was the operating area of LT David Reed, former blacksmith of east Wayne County. I say this is not certain, because these Yankee reports were often incorrect about the personalities of various guerrilla leaders of this region. Still, this may be describing the demise of the man you indicated.
Bruce Nichols