William Addams Reitwiesner has discovered that via Michael Middleton, the family are distantly related to Sir Thomas Fairfax and his wife Agnes Gascoine, an ancestor of Diana, Princess of Wales, thus making Catherine and Prince William fifteenth cousins.
William Addams Reitwiesner has discovered that via Michael Middleton, the family are distantly related to Lady Barbara Bullock (nee Lupton). This Lupton lineage also makes the Middleton family related to Sir Thomas Fairfax and his wife Agnes Gascoine, an ancestor of Diana, Princess of Wales, thus making Catherine and Prince William fifteenth cousins.