Nadra Okia ?
just after my daughter was born, her maternal grandfather died. At his widow’s house we met his sister, who showed us a photo of their great grandmother , whom she said was a Seminole Indian called Nadra Okia – it turns out, she was from the Biloxi tribe, married to a Black Creek and joined to the Black Seminole community of Nacemiento de los Negros, Coahuila, Mexico, and Brackettville, Texas. Her birth (or confirmation ) name was Laura Neco, her father Juan Antonio Neco, her husband Adam Wilson, a Seminole Negro Indian Scout. it is repeatedly stated that she was called Nadra, though why, I don’t know.
No other account than aunt Jo -Emily’s mentions the ‘okia’ – but it is close to (if I remember right) the Biloxi word for ten and could have been used to mean ‘last born ‘