OK-Blakeneys, Samuel, circa late 1800s

I am trying to find out more on my g-grandfather, Sam or Samuel.Spelling may be either Blakney or Blakeney.His son, my grandfather, Earl, was born circa 1911.

I have a picture of Sam with wife,
Irvilla(?) Ford.Earl had a few brothers and a sister(?).I have some vague information about the family coming from Mississippi, and before that ... don't know.

I would greatly appreciate anyone's help in finding names of any of these ancestors.