In 1910 Elmer was living in Wyandotte Twp in Butte Co. He was a Teamster with his own team. Elmer and Hazel both born in California; they had been married 3 years, one child had been born but was not living. James McGuire, age 45, widower, was a boarder. He was born in Ireland and was doing odd jobs for a living.
In 1920, there was an Elmer Frye, living as a boarder in another household in Butte Co. No age, birthplace, etc. given.
1930 Census, Oroville, Butte, CA, Mitchell Ave., Hh 149
Mark Elmer is buried in the Forbestown cemetery near his parents. I did not find him in the CA Death Index, nor did I find Hazel. Perhaps they did not die in California.