You can contact the Tuolumne County Assessor-Recorder-Archivist Office, portal.co.tuolumne.ca.us/psp/ps/TUP_ASSESSOR/ENTP/h/?t... Scroll down to Recorder's info and order a copy of his marriage license.
I found a the following:
John Hickey Born: 16 March 1895 MAYBE Last Residence: Modesto, Stanislaus, CA Died: Dec 1982 His soc. sec. # was assigned in CA before 1951. Source: Social Security Death Index
I know the birth date doesn't match but that is supplied by the Informant at time of death and maybe he/she didn't know the correct date.
There are obituary volunteers for this county at freepages.genealogy.rootsweb.ancestry.com/~obitl/volca.html Scroll down to Stanislaus Co.
Another new volunteer site is gengathering.com. You have to sign in but access to volunteers IS free. Successful Searching!