Found in 1870 (Yolo Co, CA - Grafton Twp.) - pg. 500
#522-457, DUNGAN, John B. 30 VA farmer $3,500-$2,000 Eliza 31 KY keeping house Robert Lee 4 CA Thomas 1 CA Annie 4/12 CA b. March CAMPBELL, Lucy 20 MO Robert 1 CA
On November 22, 1872, John B Dungan homesteaded 160 acres in Yolo County.
Found in 1880(Colusa Co, CA):
John B DUNGAN Self M Male W 49 VA Farmer VA VA Eliza E. DUNGAN Wife M Female W 41 KY Keeping House KY KY Robert L. DUNGAN Son S Male W 13 CAL At Home VA KY Thomas J. DUNGAN Son S Male W 11 CAL At Home VA KY Annie E. DUNGAN Dau S Female W 10 CAL VA KY Sarah E. DUNGAN Dau S Female W 6 CAL VA KY
Census Place Spring Valley, Colusa, California NA Film Number T9-0064 Page Number 468A
Name Index to "Local Events for 23 Years, 1870 - 1892" Gleaned from the files of "The Sun" by the Colusa County Genealogical Society: Dungan, J. B. page 30 year 1882
I do not know where or when John B. Dungan and Eliza were married.
I believe John may be related to Nancy Elizabeth Dungan, born 1858 in Shelby County, MO (possibly her Uncle).