A posted family tree identifies Henry, born in OK in 1903, mother "Cordellia Renee Garner, born 1881 in US, died 1918 in Oklahoma.
The 1910 Census for Porter, Wagoner County, OK Henry Davis, step-son, age 7, born in OK to both parents born in US Dorsey Daniels, 48, born in Arkansas, second marriage, 5 years Cordia, age 29, second marriage, mother of 4/3 living, born in US to both parents born in US. Sibling "Buster" son, age 4, "appears" to be half sibling to Henry, also Ruth, age 2.
Buster Daniels born 11/29/1905 in Clarksville, OK; died March 30, 1965 in Wichita, Kansas.He married Orpha Emma Mitchell (1910-1939) on April 17, 1933, one son.He married living McKee, one son, one daughter.(Assuming you're from this family... Get Buster's obit if you haven't already, it "might" identify the location of his 1/2 sibling).
Identify what information you have on Henry and Floyd.If you have Henry's SSN, you can obtain his application for that number (SS-5).It would identify the names of his parents (at least who he identified as his parents).
Help in Sacamento County:The Random Acts of Genealogical Kindness has volunteers: http://www.raogk.org/californ4.htmhttp://www.raogk.org/californ4.htmREAD the guidelines FIRST. An obit would be good.Public Records: Try to find his death certificate at the "Public Records (courthouse)."His marriage certificate "might" identify the names of his parents; however, that usually isn't the case, I'm guessing son Floyd born in late 20's/1930's.