Winnie Johnson-Marquart net worth: Winnie Johnson-Marquart is an American businesswoman who has an estimated net worth of $2.7 billion dollars. Currently based in Virginia Beach, Virginia, Winnie Johnson-Marquart is the great-great granddaughter of Samual Curtis Johnson, the founder of S.C. Johnson & Son. She graduated from Cornell University. Attending the college is a family tradition. She is the only member of the family that does not live year round in Racine, Virginia, where S.C. Johnson is based. She is the current president of the Johnson Family Foundation, a charitable organization. She keeps a very low profile in comparison to other family members. Recently, the Johnson family has found themselves the subject of a great deal of unwanted press, after Curtis Johnson, III, was charged with sex crimes against a child in 2011. He pled not guilty, and the trial is currently on hold. The case has altered the way the Johnson family is viewed in Racine.