Following is information I was able to find online regardng births/marriages/deaths so far.I obtained the names of Samuel's siblings from the census records.I haven't had time to transcribe them yet, but will post them later.
I would suggest that you request obituaries for these people for clues regarding your father.It will also give you the location and marriage names of the other females.
California Vital Record Index:http://www.vitalsearch-ca.com/http://www.vitalsearch-ca.com/ Births: COXJANNIELOUISE19471009GROVESFEMALESONOMA COXPATRICKMILES19500414GROVESMALESONOMA
WHISENANTEDNASUSANNAH19020810LESCOMCOXFEMALECASANTA CRUZ1987122455418216485 NOTE:No Whisenant/Cox births listed in index.
DEASELTATHERESA19070202LOUISACOXFEMALECASANTA CLARA1984020655818948577 NOTE:I believe this is the correct Elta--I believe a mistake was made with maiden name of mother (her first name was Louisa)
NOTE:Samuel did not appear in the index.
I did find this in the Social Security Death Index
SAMUEL J COX08 Jun 1909 09 Apr 1996 98584 (Shelton, Mason, WA) (none specified) 539-05-8526 Washington NOTE:Last residence Shelton; Soc. Sec. card issued in Washington.I don't know if this is the correct one.
Birth: DEASDONALDDUFFY19350922COXMALESONOMA NOTE:Possibly your cousin (if I have the generations straight.)
Marriage: DONALD D. DEAS, 23, married PATRICIA L. TOTH, 19, Sonoma County, 5 June 1959.
Births:(possible children of Donald and Patricia DEASKELLYL19651209TOTHFEMALESANTA CLARA DEASKIMBERLYR19671016TOTHFEMALESANTA CLARA DEASSHERIL19630312TOTHFEMALESANTA CLARA
Marriage: GARTNERGEORGEA20DEASSHERIL1819810808SANTA CLARA
NOTE:The other girls did not appear.My indexes go only through 1985.No children were listed in the index for a Gartner/Deas union.
Online telephone directory:http://www.whitepages.com/http://www.whitepages.com/ Donald DDeas 14867 Emily Ct Grass Valley, CA 95945-7968 (530) 477-5678
GeorgeGartner 742 Oak Hill Ln Fort Jones, CA 96032-9703 (530) 468-4114 (?--It was the only listed in California.)