I think his obituary will answer your question. There is a voluntee who will look up obits in San Diego Co. You'll find his/her contact info at www.gengathering.com. You must create a user ID and password to enter this web site. However, access to the volunteer contact info is free.
If that doesn't work out, you can contact the San Diego County Library, Ask-A-Librarian, http://www.sdcl.orghttp://www.sdcl.org.
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