Wilson's Executor v. Deen was a case heard by the United States Supreme Court in 1887. The case involved a dispute between the executor of the estate of a deceased man, Wilson, and the defendant, Deen. The executor of Wilson's estate had brought a suit against Deen for the recovery of a debt that Wilson had owed to Deen. The executor argued that the debt was still owed to Deen, even though Wilson had died. The Supreme Court ruled in favor of the executor, finding that the debt was still owed to Deen. The Court held that the executor of an estate was responsible for the debts of the deceased, and that the debt was still owed to Deen. The Court also held that the executor was not liable for any interest that had accrued on the debt since the death of the debtor. The Court's decision in Wilson's Executor v. Deen established the principle that the executor of an estate is responsible for the debts of the deceased, and that the debt is still owed to the creditor. The decision also established that the executor is not liable for any interest that has accrued on the debt since the death of the debtor.

In Wilson's Executor v. Deen, the Supreme Court was asked to decide whether a state court had jurisdiction over an action brought by a non-resident of that state against another non-resident in which the cause of action arose outside of the forum state. The majority held that it did not have such jurisdiction and reversed the judgment below. In dissent, Justice Field argued that under certain circumstances, states may exercise extraterritorial jurisdiction when necessary to protect its citizens from fraud or other wrongs committed abroad. He reasoned that since both parties were nonresidents and there was no connection between them and the forum state except for this particular transaction, allowing suit would not be oppressive or inconvenient to either party nor interfere with any public policy considerations of other states; thus he concluded it should be allowed as long as due process requirements are met.