(Fox News) Mary O’Melia left Ireland for America as a young widow with three children before she was hired as housekeeper at the White House of the Confederacy. An intimate witness to history, she also has been much of a mystery.

That was until this year, when a woman with a distinctive Irish lilt to her voice called The American Civil War Museum. The housekeeper, the woman said, was related to her late husband, and she had in her possession a necklace that Confederate first lady Varina Davis gave O’Melia.

But there was more.

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