Meet graca machel the only woman in history to marry two presidents

I think there may be some misinformation here!

Graca Machel is indeed a remarkable woman, but she is not the only woman in history to marry two presidents. In fact, she has only married one president, Samora Machel, the first President of Mozambique, whom she married in 1975 and lost in a plane crash in 1986.

Graca Machel is a Mozambican politician and humanitarian who has had a distinguished career in her own right. She was the First Lady of Mozambique during her husband's presidency and later served as the Minister of Education and Culture. She has also been involved in various humanitarian and development organizations, including the Global Movement for Children and the Club of Madrid.

While Graca Machel is an inspiring figure, I couldn't find any evidence of a woman who has married two presidents in history. If you have any more information or context about this claim, I'd be happy to help clarify!