1900 census Grant, Vermillion, IL: George F. Guinnip, aged 23, born June 1876, hostler, bp IL, father OH, mother IN; Emma B. aged 21, born Aug. 1877, married three years, no children, bp IA, father NY, mother PA.

1910 census Sutter Twp, Sutter, CA: Fred G. Gwinnup, aged 33, odd jobs laborer, bp IL, father IN, mother IL; Emma B. aged 32, first marriage for both, married 13 years, three children w/three living, bp IN, both parents IN; Yona V. aged 9; Lola F. aged 6 -- both born IL; George E. aged 8 months, bp CA.

1920 census Yount Twp, Napa, CA: Fred Gwinnup, aged 43, laborer general farm, bp IL, both parents IL; Emma aged 41, bp IN, both parents IN; Lola aged 18, bp IL; George aged 10; Delbert aged 4; and Wilfred aged 8 months -- all born CA.

1930 census Durham, Butte, CA: Fred Gwinnup, aged 53, railroad laborer, married aged 21, bp IL, father IN, mother IL; Emma aged 50, married aged 18, bp IN, both parents IN; George aged 20, railroad laborer; Delbert aged 14; Wilfred aged 10; and Rachel aged 8 -- all born CA.
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Chico Record (Chico, California) 25 Jan 1931, Sunday Page 2: Funeral For Mrs. Gwinnup Monday. Funeral services for Mrs. Emma Gwinnup, 52, who passed away at her home here Friday morning, will be held from the Westfall Funeral Home at 2 p.m., Monday. Interment will follow in Chico Cemetery.

The Rev. W.S. Lemmon will deliver the funeral sermon. Mrs. Gwinnup, a native of Indiana, is survived by her husband, Fred Gwinnup, her children, Mrs. Zona Thomas of Burbank; Mrs. Lola Horn, Agnew; George, Delbert, Winifred and Rachael of Chico.
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52-year-old Emma Gwinnup was interred, per the Chico Cemetery Association Records, in the plot noted, on January 26, 1931 (basis of birth date).
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California Death Index 1930-1940: Emma Gwinnup d. Jan 23, 1931, aged 52, Butte County; spouse's initial "F." State File No. 546.