And of course that should be Oral Frederick the last name used by him after his mother's second marriage is that of her second husband McLain. It is possible that even his first name was changed. Here is his WWI reg

Name: Oral Fredrick Mclain
Joes, Yuma, Colorado
Birthplace: Garden City, Kansas, United States of America
Birth Date: 30 May 1891 Race: Caucasian
Age: 26
Occupation: Farmer
Nearest Relative: None given
Height: Short Build: Slender Color of Eyes: Grey Color of Hair: Auburn

Other records say b. April 30 1891 KS. by 1897 his mother Carrie Angeline Anway had remarried in Nebraska to Samuel E McLain and by 1900 they were in Colorado. I have all his census records. This research is for a distant relative, and I have suggested she contact the GS in Finney Co.