The additional information helped.
From familysearch.org. Death cert and more children's names.
U S Census, 1900ED 35 Civil District 5 Maddox town, Hardin, TN
head Charley Arnett M 22 IL May 1878
wife Jane Arnett F 28 TN June 1872 married 0 yr
dau Lotie E Arnett F 0 TN
brother Thomas Arnett M 24 IL
boarder Gilbert Cobb M 23 TN
US Census, 1910 Civil District 5, Hardin, TN
self Charly M Arnett M 33y IL
wife Martha J Arnett F 26y TN b. abt 1894 (no image to view)
dau Lottie E Arnett F 10y TN
dau Willie E Arnett F 8y TN
son Walter C Arnett M 5y TN
son Cecil O Arnett M 3y AL
Tennessee, Death Records
https://familysearch.org/pal:/MM9.3.1/TH-266-11683-128094-83?cc=1417505&wc=8250661 (image online can save or print)
Charlie L. Arnett
Occupation: Farmer
Residence: Rte 1 Savannah, Hardin, TN
Death 20 Jan 1947 Bolivar, Hardin, TN
State of TN: 768; Reg. No 2; Reg Dist no. 361
Filed Date: January 25, 1947
Male Married : White Age 72 yrs 8 mos
Birth 19 May 1874 IL
Spouse: Martha J. Arnett
Father: M. Arnett b.Maryland
Mother: Ellen Smith b. unk
Informant: Son W. C. Arnett, Corinth, MS #1
Burial place: Hardin Co., TN Cemetery: Mt. Zion
Burial date: 21 Jan 1947
Undertaker: McPeters Funeral Home, Corinth, MS
volume/page/certificate number: cn 768
?????? U S Census, 1920 Hardin, TN
self Charley Arnett M 42y 1878 IL
wife Jane Arnett F 47y 1873 TN
dau Emmer Arnett F 18y 1902 TN (? Willie E)
son Coleman Arnett M 15y 1905 TN (? Wallace C)
dau Lala Arnett F 9y 1911 TN