John was born in 1809. John Turner was living in California in the 1870 Census shown as age 59 born in Maryland, with wife Placida.. age 40 born in California, also in household are children Jose, Ramon, Liousia, Isabella, Mary, Carlos Rula, all born in California. He passed away in 1877.
"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MN6N-5VZ : 17 October 2014), John Turner, California, United States; citing p. 31, family 361, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 545,572."
It may be possible to confirm family relationships with John by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with John: