John A. Barry brought a case against Mary Mercein and Eliza Ann Barry in the United States Supreme Court. The dispute was over an inheritance from John's father, who had died without leaving a will. According to his father's wishes, John should have received one-third of the estate; however, Mary and Eliza had taken possession of it all instead. In their defense, they argued that because John had been disowned by his father prior to his death he was not entitled to any part of the inheritance. After hearing both sides' arguments, the court ruled in favor of John A. Barry and ordered that he receive one-third share as per his late father’s wishes despite being disowned before passing away.. This ruling established precedent for future cases involving similar issues regarding inheritances when there is no will present at time of death

In the case of John A. Barry v Mary Mercein and Eliza Ann Barry, the dissenting opinion was that a married woman's separate property should not be liable for her husband's debts. The majority opinion stated that when a married woman owned real estate before marriage, it became subject to her husband’s control after marriage and could therefore be used to pay off his debts. However, in this particular case, Justice McLean argued that because there was no proof of fraud or collusion between the parties involved in this transaction (the sale of land), then any debt incurred by Mr. Barry prior to his wife taking possession of said land should not have been paid from those proceeds as they were considered separate property belonging solely to Mrs. Barry at the time she received them; thus making them immune from being seized for payment on her husband’s pre-existing debt obligations. He further argued that if such an action were allowed it would set a dangerous precedent where husbands could use their wives' assets without consequence and ultimately lead to unfairness towards women who are already disadvantaged under existing laws regarding marital rights and responsibilities