Olga Hafren (Hoffren) (13.4.1884-25.5.1959) immigrated from Finland 1913, later married to Fred Gustafson (20.3.1890-22.9.1964). They lived in California, Santa Clara or San Mateo.
I have only found this information from website listing Golden Gate National Cemetery in San Mateo (Plot: P2 1087).
I know Fred was an WW1 veteran. Now I wonder if they had any children and I'm begging for a lookup for obits or gravestones. Here is some relatives wondering what ever happened to Olga.