Marriage record: "Oklahoma, County Marriages, 1890-1995", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QVP6-9JTZ : 3 December 2014), Ed Ingram and Etta Cagle, 1908.
WWII Draft Card: "United States World War II Draft Registration Cards, 1942," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XPY5-F2V : 19 April 2016), Edward Ingram, 1942; citing NARA microfilm publication M1936, M1937, M1939, M1951, M1962, M1964, M1986, M2090, and M2097 (Washington D.C.: National Archives and Records Administration, n.d.).
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Ed is 30 degrees from Herbert Adair, 24 degrees from Richard Adams, 22 degrees from Mel Blanc, 30 degrees from Dick Bruna, 24 degrees from Bunny DeBarge, 36 degrees from Peter Dinklage, 20 degrees from Sam Edwards, 20 degrees from Ginnifer Goodwin, 25 degrees from Marty Krofft, 19 degrees from Junius Matthews, 19 degrees from Rachel Mellon and 21 degrees from Harold Warstler on our single family tree. Login to find your connection.
There are a couple records with the answer to your post about the parents of Edward and Etta Ingram.
Here are the records I used to find their parents.
Marriage record: "Oklahoma, County Marriages, 1890-1995", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QVP6-9JTZ : 3 December 2014), Ed Ingram and Etta Cagle, 1908.
WWII Draft Card: "United States World War II Draft Registration Cards, 1942," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XPY5-F2V : 19 April 2016), Edward Ingram, 1942; citing NARA microfilm publication M1936, M1937, M1939, M1951, M1962, M1964, M1986, M2090, and M2097 (Washington D.C.: National Archives and Records Administration, n.d.).
Enjoy!