(answer from the rootsweb board): The Washington Digital Archives (www.digitalarchives.wa.gov) and Family Search Labs (http://pilot.familysearch.org/) both list Frank G. Eaton's death record, stating his father is William Eaton and his mother is Anna Youngblood
Clark County Genealogy Society's cemetery records show the following in Evergreen Memorial Gardens Cemetery:
GGS 1/237 Eaton Frank G. Eaton, July 25, 1887 - June 30, 1959, Illinois - Cpl. - Co. M - 130 Infantry (nearest relative: wife: Mary A. Eaton, deceased)
GGS 2/237 Eaton Mary A. Eaton, Jan 1, 1889 - Jan 18, 1967 (w/Frank G. Eaton, husband: deceased, VFC)
The Codes are: GGS = Garden of the Good Shepherd VFC = Vancouver Funeral Chapel
You can find those through the CCGS website: www.ccgs-wa.org Then click on Special Projects Then click on Clark County Cemeteries
(Please note that there is something NOT RIGHT with the death dates. If Mary A Eaton is deceased when Frank dies in 1959, she couldn't have died in 1967... after he died) On that page you will find links to the cemeteries, or scroll down to the search box and type in "Eaton, Frank" with the comma and the quotes.
Back on the Washington Digital Archives there is a marriage record for Frank G Eaton and Mary A Randall on 22 January 1945 in Vancouver, Clark, Washington (you can see an image of the record).
His WWI Draft registration (on Ancestry) lists his registration place as Champaign, Illinois, and he is single at the time of his registration 5 June 1917. His residence is Sidney, Illinois
His WWII Draft registration in 1942 (also on Ancestry) lists his birthplace as Sidney, his residence as Sidney, and Anna Eaton (his mother) as the person who will always know his address. He is 55, white, 5'11", 160, light complexion, gray hair. There is no place to indicate married or single.
The US National Homes for Disabled Volunteer Soldiers, 1866-1948, Register E, Danville, Illinois, lists interesting information on a "Frank Eaton" that appears to be the same person (born 1887 in Sidney, IL)
Military History Enlisted: 1917 June 11, Champaign, IL Private, Company M, 130 Inf. Discharged: 1919 May 31, Cp grant Ill Cause of Discharge: Demob(?) Disabilities when admitted to the House: 1061 - Acute Nephritis 0139 Chr Arthritis of legs
Domestic History Where born: Sidney, Ill Age: 43 Height: 5'11" Complexion: F Color of eyes: Lt blue Color of hair: Dk grey Read and write: Yes Religion: Prot. Occupation: Garage attendant Residence Subsequent to Discharge: Champaign, ILL Married or Single: Married Wife: Elizabeth Eaton, 504 No. Ash St., Champaign, ILL
Home History: Admitted D. Br. Dec 11/30 Date of Discharge: Jan 17 - 1931 Cause of Discharge: Dis. o.r.
Readm. D. Br. Jun 7/32 Date of Discharge: Oct 18 - 32 Cause of Discharge: Dis. o.r.
Readm D Br Oct 18/32 Date of Discharge: Oct 20 - 32 Cause of Discharge: Readm. cancelled
General Remarks Papers: Army Discharge: 1 - 1384912