Young v. Grundy was a case heard by the United States Supreme Court in 1810 that dealt with the issue of whether or not an individual could be held liable for debts incurred prior to their marriage. The plaintiff, Young, had married Grundy and assumed her husband's debt as part of their marital agreement. However, when he failed to pay off his wife's pre-marriage debtors, they sought payment from him directly. In its ruling on this case, the Supreme Court determined that individuals are only responsible for debts contracted after marriage and cannot be held liable for those taken on before it took place. This decision established a precedent which has been followed ever since; spouses can assume responsibility for each other’s post-marital debts but remain independent entities with respect to any obligations entered into beforehand.

In Young v. Grundy, the Supreme Court was asked to decide whether a state court had jurisdiction over a case involving citizens of different states. The majority opinion held that it did not have such jurisdiction and dismissed the suit. However, Justice Story dissented from this decision on two grounds: firstly, he argued that Congress had given state courts concurrent jurisdiction in cases between citizens of different states; secondly, he contended that even if Congress had not done so explicitly, they should be presumed to have intended for state courts to exercise such authority as part of their inherent powers under the Constitution. He further noted that allowing state courts to hear these types of cases would help ensure uniformity among decisions made by federal and state judges alike. Ultimately Justice Story concluded his dissent with an appeal for greater respect towards both federal and state judicial power when deciding matters concerning interstate disputes or controversies