I have found a bit more information. Maggie died in 1902 along with a son Earl born in 1901. They are buried in Greenwood Cemetery in Stockton.
In Centralia Cemetery it is listed that John (died 6/23/1943) was married to Bessie Anderson (died 1/7/1938). Buried with them is a son Deloy A. who dies 7/12/1932.