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According to the Associated Press，a family spokesman says former first lady Barbara Bush has died at the age of 92.

"A former First Lady of the United States of America and relentless proponent of family literacy, Barbara Pierce Bush passed away Tuesday, April 17, 2018 at the age of 92," said a statement from the office of George H.W. Bush. Barbara Bush and former US President George Bush were married for 73 years.

Barbara Bush and former President George Bush at an awards ceremony last year. (Photo: AP)