Here's an interesting article about a woman named Monteen from
Georgia US:
http://dolop.org/storyjessie.html
Monteen also seems to be an Irish place and surname.
Here's another about a hawk master (mistress?) Monteen McCord which is from
Georgia but with an Irish/Scottish surname:
http://www.owlpages.com/contributors.php?conid=79
Maybe it came from
Ireland to US and took off in
Georgia?