Life Of Kate MIddleton

Her previous coat of arms depicted a lozenge shaped shield of arms which hangs from a blue ribbon, this symbolised her unmarried state. This version of the arms is now used only by her sister Pippa as it denotes an unmarried daughter of their father Michael Middleton.
Ancestry
In a study of the ancestry of Catherine, William Addams Reitwiesner uncovered that she shares ancestors with her husband Prince William; the closest relationship is via Prince William's mother and Catherine's father through a common descent from Sir Thomas Fairfax and his wife Agnes (or Anne) Gascoigne, daughter of Sir William Gascoigne and his wife, née Lady Margaret Percy. This makes the couple fifteenth cousins. Sir Thomas Fairfax and Agnes Gascoigne are through Catherine's great-grandmother Olive Lupton, daughter of a Leeds cloth merchant Francis Lupton and his wife Harriet (née Davis) – Fairfax being an ancestor of Lupton. In turn Lady Margaret Percy is descended from Edward III.