George died of unknown about 1976 in Portland, Multnomah County, Oregon. He was probably in his mid-seventies.
Gladwin changed his given name to George in the late 1940's ..... He married and divorced and died without issue.
Gladwin R Edgar appears in the 1900 United States Federal Census as a fraternal twin living his parents and eight siblings, four brothers and four sisters including his twin sister.
For a larger view of the 1900 census image below, click here.
Name: Gladwin R Edgar; Age: 4/12 [4 months]; Birth Date: Jan 1900; Birthplace: Iowa; Home in 1900: Glenwood, Mills County, Iowa; Ward of City: 1st; Street: Hazel; House Number: 8, Sheet Number: 6A; Number of Dwelling in Order of Visitation: 126; Family Number: 133; Race: White; Gender: Male; Relation to Head of House: Son; Marital Status: Single; Father's name: Thomas Edgar; Father's Birthplace: Canada; Mother's Name: Mary K Edgar; Mother's Birthplace: Iowa.
"Iowa, County Births, 1880-1935," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XVFH-684 : 20 May 2016), Gladwin R. Edgar, 21 Jun 1900; citing Glenwood, Mills, Iowa, United States; county district courts, Iowa; FHL microfilm 1,503,207.