Four men, Adams, Bates, Clark, and Douglas, were speaking of their wives. They were not well acquainted and the statements they made, as listed below, are not all accurate. In fact the only thing which is certain is that each statement in which a man mentions his own wife's name is correct.
Adams:
Dorothy is Jean's mother. 
I have never met Patricia.
Bates: 
Clark's wife is either Dorothy or Patricia. 
Jean is the oldest.
Clark: 
Patricia is Adams' wife.
Dorothy is Jean's older sister.
Douglas: 
Margaret is my daughter.
Dorothy is older than my wife.
What is the given name of each man's wife?

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THE SOLUTION

Margaret Adams, Patricia Bates, Dorothy Clark, and Jean Douglas.