In the latest episode of Radio 4's new podcast on the life of Elizabeth II, James Naughtie turns his attention to the marital woes of the Queen's children and how they affected her and her reign. In a highly successful union, the Queen herself was happily married to Prince Philip for more than seventy years. But for her children the story was different with highly public - and sometimes acrimonious - separations. How did the head of state - and mother - handle the crises and what damage did they inflict on an institution that was trying to cope as best it could with the new social ways?