His birth famously prompted her to declare "we have become a grandmother".
Eighteen years on Margaret Thatcher's grandson is now prompting devotion in fans of American football as he becomes a rising star of the game.
Michael Thatcher, whose father Sir Mark Thatcher separated from his mother after being accused of planning a coup in Equatorial Ginuea, has helped carry his high school team to the finals of the state championships with a extraordinary catch during the quarter final play offs.
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