Hi Sharon, I'd contact the Gilliam County, Oregon Historical Society, www.rootsweb.com/~orgillia/HistoricalSociety.htm and ask if they have a marriage record for George and Edna.
This is what I found for them. In 1900 they were living in Union, Grant Co., OR. George D., head household, b. July 1866, CA, marr 3 yrs, hotel keeper; Edna G., b. Aug 1874, CA, no children; the rest of the people living with them were boarders.
In 1910 they were living in Umpqua, Douglas Co., OR. George D., b. CA, 43 yrs old, marr 15 yrs, stock farmer; Edna G., b. CA, 35, no children; N. P. Cantwell, motherlaw, b. OK, 57, widow, had given birth to 3 children who were alive in 1910; Willie Cantwell, b. OR, 11, lodger, single; C. W. Henry, lodger, single, b. NY, 47, stock farmer.
In 1920 they were living in Portland, Multnomah Co., OR. George D., b. CA, 52, no ocupation; Edna G., b. CA, 46, no occupation and Chas. W. Henry, lodger, 55.
In 1930 they were living in Beaver, Tillamook Co., OR. George D., b. CA, 62, dairy farmer; Edna G., b. CA, 54 and Charlie M. Henry, partern, b. NY, 66, dairy farmer. Successful Searching!