Could this be the Benjamin F Parker of Cooper Co? He had 2 brothers David and Wayne that would be the right age to participate with him in the CW. Father would be Thomas, Mom Sophronia, both of TN.
1850
Benj Parker
Age: 16
Birth Year: abt 1834
Birthplace: Missouri
Home in 1850: District 23, Cooper, Missouri
Gender: Male
Family Number: 1318
Household Members:
Name Age
Thomas Parker 43
Sophronia Parker 40
Benj Parker 16
Susan Parker 14
Mary Parker 12
Sarah Parker 10
David Parker 8
Wayne Parker 7
Luretha Parker 6
Green Parker 5
Henry Parker 4
1860
Name: Benj F Parker
Age in 1860: 24
Birth Year: abt 1836
Birthplace: Missouri
Home in 1860: Saline, Cooper, Missouri
Gender: Male
Post Office: Gooches Mills
Value of real estate: View image
Household Members:
Name Age
Sophronia Parker 44
Benj F Parker 24
Susan M Parker 22
Sarah E Parker 20
Mary J Parker 21
David P Parker 18
Wane S Parker 16
Zentha A Parker 15
Green T Parker 12
Henry S C Parker 11
Madora E Parker 8
A couple of issues lead me here, right age right neighborhood particularly the Gooches Mill connection. Also there is a W S Parker who was part of Routt's Regiment in 1861 that was at Lexington and took the arsenal at Liberty I think. If I remember right he is mentioned in the Wilke letters.
FWIW its a lead.....
John R