There is two obituary volunteers for King Co. Their contact info is at www.gengathering.com. You do have to create a user ID and password to access this web site but access to the volunteer info is free.
If this doesn't work out, you can contact the Washington State Library, sos.wa.gov/library/obituaries.aspx who will look up an obituary at no cost. However, wait time is about 8 weeks. Successful Searching!