LAT June 5, 1904
Looking for something else, I stumbled upon this illustration in the Times describing the new house being built by "T. X. Onam"--the man's initials were actually T. H., for Thomas Henry, and he was an English-born mining engineer. Charles E. Shattuck was the architect. Still standing after 109 years at 1324 S. Westlake Ave.
GSV
GSV
Looks like the upper front windows were altered before the final blueprints, or in a later remodeling.
At the time of his death in 1915, Oxnam was living at 2211 Cambridge Street, also still standing. The 5-block Cambridge Street is worth checking out for its collection of intact houses from the 1910s, including a well-known Greene & Greene at 2175 Cambridge.