George Wigginton is listed as enroling in Col Ross's Regiment Co B Sept 6, 1861 in Jackson Co., Missouri. He is also listed as riding with Quantril. I am not the Quantril expert on the list and there are several who are so I leave it to them to fill in that gap.
Rev. William Russell Wigginton is listed as a Chaplain.
James is listed as having "Confedrate Service & served faithfully"
All three are listed as having United Daughters of the Confederacy records.
The 1850 Census list the 3 with parents John and Mary and siblings in Blue Township Jackcon County Missouri, Dwelling 16, Family 16.
John age 50 (1800) Farmer Kentucky
Mary age 41 (1809) Kentucky
Samuel age 18 (1832) Sudent Missouri
Henry age 23 (1827) "
John J. age 21 (1829) "
William age 16 (1834) "
Amanda age 14 (1836) "
Mary C. age 10 (1840) "
George. age 6 (1844) "
John Wigginton is listed in the MO SOS file as being killed by Federal Troops. No Date is given.
Samuel is listed as being enlisted with Barret's Battery Missouri Light Artillary, enlisting Oct 13 1861, missing on "special assignment" May 29, 1862 as late as December 1862.
The Wigginton Household is listed as being slave owners in the 1850 Missouri Slave Census.
As an aside there were family branches in Boone and Pike County in 1850 with a number of common names. Both were also slave owning families.