Greetings! I am not as strong in Creek research as I am in other nations, but I'll see if I can help. By a Roll number, I would assume you are talking about her tribal membership number. You would need to write to Creek Nation. See this site: http://www.muscogeenation-nsn.gov/citizenship/cit%20criteria... to see if she had a roll number because she was born after the Dawes Roll and her information is not in the public domain. You will need to lay some groundwork first, though, to see if it's possible she had a roll number. Sometimes family stories are just that, with a kernel of truth but not all of it. So this is what we need to do.

I see from the records available that Mary was born 9 May 1912 in Kansas and her mother's maiden name was Green. I have looked at the Dawes Commission final roll at http://www.accessgenealogy.com/native/finalroll.php There are a number of Dunns and a number of Greens on the rolls as of 1906. Since this is a little before your Mary's time, we need to look a little deeper.

Do you have any idea of who Mary's parents were? I find two possibles in 1920, but I can't identify her positively. In order for Mary to have a membership number, she had to trace her ancestry through her direct blood line do a parent or grandparent on the Dawes Roll. In order to be on the Dawes Roll a person had to be able to prove tribal membership based on the designated tribal census returns AND had to be resident in the Indian Territory (now Oklahoma). This residency requirement is what most often kept people from inclusion on those final rolls. The two families I find in 1920 do not have parents that would qualify UNLESS they were born outside the IT and their parents moved there prior to the Dawes. This happened so it's within the realm of possibility. It's also possible her grandparents were enrolled and her parents not, but she could prove her bloodline and was granted citizenship. There WERE some exceptions on the residency requirement but they were VERY few and far between and in carefully controlled circumstances - away on military service, health related proved by a doctor, and some in areas technically outside the IT but traditionally accepted as Indian Territory. These were along state lines in AR, TX, KS, but also few and far between.

If you can give us any other information, it would be helpful