From: HISTORY OF THE STATE OF CALIFORNIA AND BIOGRAPHICAL RECORD OF THE SACRAMENTO VALLEY by Prof. J.M. Guinn, A.M.
.... She is a native of Ralls County, Mo., and a daughter of Joseph Griffin, an early California pioneer. .......

...The first marriage of Miss Griffin united her with A.S. Dinwiddie, a native of Kentucky and a representative of the famous Virginia family of that name founded by Governor Dinwiddie, a Scotchman who was sent over as chief magistrate of Virginia during the early days of George Washington. A.S. Dinwiddie came to California with his father, John Dinwiddie, in 1846, and was a pioneer farmer in Yolo County. [Alexander Selkirk Dinwiddie died about 1915 in Sacarmento, CA]

.......Her second husband was John A. Spencer, a native of Ralls County, Mo. In October, 1878, they settled upon a farm near Colusa, but two years later moved to Arbuckle, she in the meantime having purchased four hundred acres of land lying along the line of the Southern Pacific railroad, south of that town. That property she sold some twenty years afterward and bought a tract of twelve hundred acres located three miles west of Arbuckle, where she now resides. In addition to this she rents eighteen hundred acres in that vicinity, the whole amounting to three thousand acres, which she devotes to the cultivation of grain and the raising of stock, and her excellent management of this extensive enterprise has created for her a reputation extending far beyond the borders of the locality. The handling of the products necessitates the employment of six eight-mule teams, a Holt combined harvester with an eighteen-foot cut, and requiring in its operation the services of thirty-two mules. Her residence and other building are substantial and commodious, and her property as a whole is not only one of the largest, but also one of the best in Colusa County.
Mrs. Spencer is a member of the College City Rochdale Company, and also of the Daughters of Rebekah in Arbuckle. The children of her first union are, Alice, a graduate of Van Ness Seminary, and the wife of L.R. Woodworth of Yuba City, Cal.,; and Minnie A., wife of G. H. Stearns, and residing with her mother. Of her second marriage there is one son, Griffin Spencer, who is in charge of the farm."

Note: Yolo county records show their marriage occurred on 24 Oct 1880 vs 1878 in above history.