Elizabeth McQueen b. 1721 from Bladen, NC

I am looking for information on Elizabeth McQueen.She was born about 1721 in Bladen (possibly County), N.C., m. David Stewart (Stuart).Their daughter, Rachel, m. Henry Flowers, Jr. Rachel and Henry's daughter Olivia m. John Altman, and on down the line.The Altman line is my mother's.I haven't been able to find information on Elizabeth besides this, and nothing on her parents.I have heard that her family was royalty in Scotland, but I'm clueless as to whether this is truth or not.Can anyone help me with this woman and her family?

Teresa