These are from the Soldiers and Sailors site:
Wigginton, W.H.
Confederate Artillery
H.M. Bledsoe's Company, Missouri Light Artillery

Wigginton, W.W.
Confederate Infantry 16th Regiment, Missouri Infantry

Wigginton, William H.
Confederate Artillery
H.M. Bledsoe's Company, Missouri Light Artillery

Wigginton, William W.
Confederate Cavalry 7th Regiment, Missouri Cavalry

Wigginton, William W.
Confederate Infantry 16th Regiment, Missouri Infantry

And MO SOS archives show a George and a GW Wigginton (Lee's Summit) as having been with Quantrell