Frederick John Mills (April 28, 1865 – September 28, 1953) was a Republican politician and prominent engineer from the U.S. State of Idaho.
He served as the fourth lieutenant governor of Idaho.
[2] Mills also served as State Engineer of Idaho from 1895 until 1897.
An hour before the shooting, Mrs. Mills had confessed to her husband an affair with O'Melveny.
[citation needed] "Executive Branch" (PDF).