The Queen's sister, who passed away in 2002, did not speak to Princess Michael, 76, when she tied the knot with Prince Michael in 1978. Speaking on the Channel 5 documentary The Controversial Princess, royal commentator Viscountess Hitchingbrooke revealed the reason for Margaret shunning her cousin's wife was because Princess Michael was a Roman Catholic.  Ironically, the Queen's sister looked into Catholicism later in life after befriending a Catholic priest. However, she never converted. Princess Michael of Kent, born Baroness Marie-Christine von Reibnitz, was previously married to Thomas Troubridge and married the royal shortly after her first marriage was annulled. The Queen's sister wa ...