Harrison Samuel Evans - Samuel Evans

I am seeking more information of my lineage.

Myself : Herbert L. Evans Jr. - Born Mar.4, 1939
My father : Herbert L. Evans - Born Aug.22, 1914
My Grandfather : John Daniel Evans - Born June 12, 1880
My G Grandfather : Thomas Jefferson Evans- Born abt 1857 Dubois, IN - Died Lindsay, OK (?)
Might have been a Cherokee adopted into the Evans family
My GG Grandfather : Sam(uel ?) Evans - Born (?) Ellsworth (?) (IN ?)

Any viable input will be greatly appreciated.

Respectfully,

Herbert L. Evans Jr.