TRACYH74 on Family Tree Circles

I am looking for information on Patsy Deerfield Spence. We know that her parents were William and Lucy Deerfield, but in a census we found it listed her as being full blooded cherokee indian. We know her parents were not indian, so we think they took her in or adopted her.We are looking for her indian name and family. we have heard that someone has found certification on Patsy being a cherokee indian they just wont get back with us. I am just looking for a place to start searching , so if anyone could help me out in any way i would appreciate it.