The Pennsylvania Oath of Witness to Will Executed by Another is a form of oath that is used to establish the validity of a will in Pennsylvania. This oath is taken by two or more witnesses to a will who have witnessed the testator (the person making the will) execute the will. The witnesses must sign and swear to the truth of the will in the presence of a notary public. There are two types of Pennsylvania Oath of Witness to Will Executed by Another: the standard form and the special form. The standard form is used in situations where the will has been executed in the presence of two or more witnesses. The special form is used when only one witness has been present at the execution of the will. In both cases, the witnesses must swear to the truth of the facts in the will and acknowledge that the testator was of sound mind when executing the will. The Pennsylvania Oath of Witness to Will Executed by Another is a legal document that is necessary to ensure the validity of a will and to protect the interests of the testator and their heirs.