My Grandmother Verna and her Brother Howard are of Indian decent and are the children of Thomas Bufford Matthews. Mother is Either Irma or Erma Mendenhal possibly. Grandma died in 93 her brother a bit earlier. Have a Half brother Herbie. Interested on tribe of indian heritage as they were born and raised in Wa and I remember Grandma tell that her Greatgrand mother was full blooded and whos father was a cheif. Any information?