While I have no idea how to access marriage records from that period of time - I did find a death record for Addie = She died 3/30/1929 in Alameda County - age 45 making her born about 1884 or so -- perhaps a 1900 census would give you parents info. The death cert. # is 16894 if I read it correctly.
ON Roots Web World Connect there is quite a lot about Percy but nothing on Addie except their marriage date. http://worldconnect.rootsweb.com/http://worldconnect.rootsweb.com/