Looking for Claytons, Vias, & Youngers in Tenn & Okla.

I am attempting to find info on my g g grandparents, John Newton Via and Nancy Margaret Elizabeth Younger. They were the parents of Sarah Frances Via [b. 1863, Tenn], who married Jeff Monroe Jackson Clayton [b. 1854, Tenn]. Sarah and Jeff were the parents of John A. Clayton [b 1881, Ark].

I am seeking death, burial, and marriage records. I will appreciate any assistance.  Thank you