Don't know how much help this will be but here are two possibilities...
based on dates... there is an Annie J. Marshall born 5-18-1914 CA died 3-5-1976 in San Joaquin Co, CA. It doesn't list any maiden name for this person.
and based on the surname... In the CA Marriage index. Annie J Geto age 45 married Celestin. Mata age 49 on Jan 10 1974 in Amador Co. CA Annie J. Mata is listed in the CA Death Index as born Jan 17, 1928 in CA died Oct 9, 1977 and the SSDI places her last residence in Stockton, San Joaquin Co. CA. The family for this Annie J. Geto is listed in the 1930 Census for Calaveras Co. CA under the name Gato.
The dates are off, but they could be two more surnames to call the cemetery with. Good luck to you! Stacy