Elaine Tettemer Marshall
Elaine Tettemer Marshall is an American billionaire and, as of 2012, the fourth richest woman in America. Marshall is the widow of E. Pierce Marshall and the daughterinlaw of the late J. Howard Marshall II. Marshalls wealth derives from holdings in Koch Industries willed to her by her husband. Marshall is one of nine members on the Koch Industries board. Marshall has said that estimates of her net worth are inflated.
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Source: Wikipedia