I wasn't sure by your wording whether or not you already have the 1910 census information. Just in case you do not:
1910; Census Place: Eagle Creek, Clackamas, Oregon; Roll: T624_1279; Page: 2B; Enumeration District: 28; Image: 247. Name: Elwood W Lambdin Age in 1910: 38 Estimated Birth Year: abt 1872 Birthplace: Indiana Relation to Head of House: Head Father's Birth Place: Kentucky Mother's Birth Place: Indiana Home in 1910: Eagle Creek, Clackamas, Oregon Marital Status: Divorced Race: White Gender: Male
Household Members: Name Age Elwood W Lambdin 38 Martha E Lambdin 13 Mary M Lambdin 13 Viola Lambdin 3
On the 1920 Martha is in Multnomah County and Viola is in Polk County. Both are listed as boarders.
I did find this listing:
Oregon Death Index, 1903-98 Name: Lambdin, Eldwood County: Marion Death Date: 30 D* 1943 * D = December
If you are interested in his death certificate information, you can either order his death certificate from the archives: 800 Summer Street NE Salem OR 97310 phone (503) 373-0701 fax (503) 373-0953
Or post a lookup request for his DC information on the Marion County forum and hopefully a volunteer will obtain that for you. Be sure to make an informative post using both spellings of his first name, date of death and county.
I hope this helps with your search. Good Luck! Laura