Kenneth Dale Rash

Ella Cave Hawn (1868-1940) https://www.findagrave.com/memorial/97650776
The findagrave entry for his maternal grandmother Ella apparently was written by a relative and fills in some information about his mother Blanche and her kids:
"Ella had the heartbreak of a son dying at age 8 , then embarrassment of her daughter being in five or more major newspapers in 1922, when her daughter married a professor Tiernan for one day till the marriage was annulled due to her still married to another person, which turned out that marriage was no good due to him being married to someone else.
Ella took it all in stride and stood up for her daughter, and she and Rev Charlie even raised two of Blanche's children, Verdene & Catharine May."
Separate note, not part of the above findagrave entry: The 1920 census (and 1930 and 1940) shows the third child, Kenneth, living in his paternal grandfather Everett Rash’s house, so all three children lived with grandparents. I can't help but feel sad for Kenneth and wonder how he dealt with being separated from his sisters and parents. The photo accompanying this geni entry shows him with his aunt Opal Rash Leonard, who is playing guitar. Maybe they were close and he took consolation there.
As for the rest of his life, all I've found is the below record of his enlistment in the National Guard in 1941. If anyone has information about his life and death, please add it here or click the link to contact me and I'll add it for you.
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https://www.familysearch.org/tree/person/details/GZ6D-SV8
Birth 5 September 1918 Marshalltown, Marshall County, Iowa
Death 19 Oct 1984 Rockford, Winnebago County, Illinois
Burial Scandinavian Cemetery
Wife: Theresa Musialek Swanson Rash, b. 1906. https://www.familysearch.org/tree/person/details/GFQ9-CRZ

Obituary info: https://www.familysearch.org/ark:/61903/1:1:QPYY-YL75?treeref=GZ6D-SV8

Iowa, County Births, 1880-1935
Name: Kenneth Dale Rash
Event Type: Birth
Event Date: 05 Sep 1918
Event Place: Marshalltown, Marshall, Iowa, United States
Gender: Male
Father's Name: Floyd Oley Rash
Mother's Name: Blanche Irene Hawn
Certificate Number: 520
GS Film Number 1753228
Digital Folder Number 004266397
Image Number 00274
Citing this Record: "Iowa, County Births, 1880-1935," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:V46J-T5W : 11 March 2018), Kenneth Dale Rash, 05 Sep 1918; citing Marshalltown, Marshall, Iowa, United States; county district courts, Iowa; FHL microfilm 1,753,228.

Name: Kenneth D Rash
Event Type: Military Service
Event Date: 10 Feb 1941
Term of Enlistment: 0
Event Place: Mason City, Iowa, United States
Race: White
Citizenship Status: citizen
Birth Year: 1921
Birthplace: IOWA
Education Level: 3 years of high school
Civilian Occupation: Semiskilled chauffeurs and drivers, bus, taxi, truck, and tractor
Marital Status: Single, without dependents
Military Rank: Private First Class
Army Branch: Infantry
Army Component: National Guard (Officers, Warrant Officers, and Enlisted Men)
Source Reference: National Guard
Serial Number: 20705935
Affiliate ARC Identifier: 1263923
Box Film Number: 03563.77
Affiliate Publication Title: Electronic Army Serial Number Merged File, ca. 1938-1946
Citing this Record:? "United States World War II Army Enlistment Records, 1938-1946," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:K8GP-KDC : 5 December 2014), Kenneth D Rash, enlisted 10 Feb 1941, Mason City, Iowa, United States; citing "Electronic Army Serial Number Merged File, ca. 1938-1946," database, The National Archives: Access to Archival Databases (AAD) (http://aad.archives.gov : National Archives and Records Administration, 2002); NARA NAID 1263923, National Archives at College Park, Maryland.

The following findagrave entry is potentially him, but no birth year or place is given.
https://www.findagrave.com/memorial/198526861/kenneth-d-rash