Is this yourElias Plummer Sanders:

Elias Plummer Sanders
Birth 1775 in Cherokee, Swain, North Carolina, United States
Death 1865 in Hartwell, Hart, Georgia, United States


Based on http://www.sandersweb.net/PDF/EliasSanders.htm, there is a possible explanation for the confusion.
ELIAS (PLUMMER) SANDERS
was born 1775 in North Carolina, and died 1865 in Hart County Georgia. He was a full-blooded Cherokee Indian that was adopted by a Sanders family in Ga. Elias married MARY CARTER in 1795, daughter of Thomas Carter. Mary was born abt. 1775 and died abt. 1850-1860. Elias and Mary are both buried in Hart County.
Elias Parents:
Elias Sanders was born Elias Plummer and was orphaned as a minor child and was adopted by a Sanders family in Georgia. We have proven that his biological parents last name was Plummer. To date we have not been able to 'prove" info on his Plummer family or the Sanders family that adopted him.

Indian Heritage:
A number of people have published information on the Internet stating Elias was an "Indian from the Plumer or Plummer Indian Tribe". Others have said that it was his wife Mary Carter that was Indian.

The source of the Plumer/Plummer Indian myth probably originated from the book "The History Of Hart County Georgia" by John William Baker (see excerpt). In this book Baker states that Elias Sanders (Jr.) father was "thought to be British, his mother, an Indian woman from the Plumer Tribe". This error has caused a lot of head scratching by researchers. I have found a number of posts on genealogy websites asking for information on the "Plumer or Plummer Indian tribe", so I am not the only one that has spent time trying to find this Indian tribe!.

What little we do know about Elias Sanders Sr. Indian heritage comes from documentation that was part of a Federal Court case. In 1902 the Cherokee Nation filed suit against the United States Government concerning grievances arising out of treaties. On May 18, 1905, the court decided in favor of the Eastern Cherokees and more than $1 million was appropriated by Congress for use in payment of these claims. Guion Miller was appointed as a Special commissioner of the Court of Claims.

The Guion Miller Rolls(1) are the official records of applications by descendants of The Cherokee Indian Tribe claiming compensation. In these papers we find that two of Elias grandchildren made application:
1. Lewis Marion Sanders Jr (son of Lewis Sanders & Prude Miller), wife's name is Lettie. He lists his chil-dren as JB, Henry, Andy, Lessie, Margarette, his grandfather as Elias & grandmother as Mary, both born in N.C. He says "Elias Sanders a Cherokee Indian was my grandfather on my fathers' side." His state-ments were attested to by W. R. Pullian and A. J. White.2. Mrs. Rhoda (Sanders) Lattay, the daughter of Calvin P. Sanders (son of Elias Sanders Sr). Mrs. Lattay stated "I claim through my grandfather a Cherokee Indian by the name of Elias Plummer who was adopted by the Sanders".
The applications for compensation were disallowed because they could not demonstrate that Elias was a party to a treaty nor could they "prove" that he was a member of an Indian tribe. However, that does not mean that he was not of Indian ancestry. Records from the 1775 time period may no longer exist so 'proof' of birth and other records could have been impossible.

This might be worth looking into;

familysearch.org/ark:/61903/2:2:SY4W-5HN

I have send you a private message re more info

Yes. The one from Cherokee, NC is the right one. I already have all of that info. What I'm searching for is who his actual parents were if he was adopted. I find no truth in the "Plumer, Plummer" tribe, but have always been told he was a Cherokee child whose mother either died giving birth to him or died shortly thereafter and he was adopted by an Englishman with surname "Sanders" and his wife. Just wanted to know if I'm a Sanders biologically or some other name. Sounds crazy I'm sure, but I guess it all goes back to "who am I"?

I also have seen that he was born in Maryland. Don't know why the mix up as it appears to be the same person. My line goes as ; Elias Plummer Sanders to his son Lewis Manly Sanders to his son William Harrison Sanders to his son Milford M. Sanders to his son Pennic Brown Sanders to his son Max Randolph Sanders to me and my brothers.

I've been thinking if Elias Plummer Sanders was born in Maryland and was truly native american, he probably wasn't Cherokee, but of some other tribe and we'll never know.