Who were the parents of Ann Butler, wife of Luke Mann?

Looking for documentation as to the parentage of Ann Butler, born about 1740, and married Luke Mann about 1756. Luke was born 1736 and died around 1800. Luke was a member of Provincial Congress and is registered with the DAR as a patriot and Rev. War soldier. I cannot find any information on his wife, Ann Butler. She must be kin to the Butlers that lived in and around where Luke Mann lived in Bryan County, Georgia, but I have found none to date that had a daughter named Ann or Ann Mann. There must be something out there that tells us that Luke married Ann Butler in order for us to know that. Maybe there is more to be found.If you have information on Ann Butler, please contact me at dampierp@comcast.net