That quote from me was posted several years ago. I now, after further study and after reading Payton Carter III's book "Who Was Richard Brayne?" that there were several mistakes in the post.
Butler Brayne was the wife of Alexander Spotswood, later in her widowhood she married John Thompson. Her mother was Anne, her older sister was Anne, and her dauhter was Anne, but she was NOT ANNE. Throughout her life she was known only as Butler. Her son John Spotswood in a letter to the surviving Brayne sisters in England refers to her simply as Butler Spotswood.
All references to the family name, including family church records in England spell the name Brayne, never Bryan. There is no solid evidence that she was in any way related to the Duke of Ormond.
Many have wondered how Alexander Spotswood met and married Butler in such a short time span in 1724. The riddle was solved by Thomas Mc Masters in his Masters degree thesis on the early life of Spotswood. It seems that one of Spotswoods two personal factors (agents) in London was Richard Brayne. Conjecture is that before Spotswood left for Virginia in 1710, he would have seen the young Butler and upon his return to London in 1724, the two would have been exposed to each other frequently.
Spotswood was by this time a wealthy man of substance in the New World and made a perfect match for the increasingly impoverished family of Richard Brayne.
On a related note, when Spotswood and Brayne returned to Virginia, they brought with them Butler's younger sister Rebecca (Miss Thecky) who met and married Spotswoods cousin Elliot Beneger, thus there are double connections of the Brayne and Spotswood families.