When it is necessary that the representative of a person deceased be made a party to a pending suit, and the executor, or person entitled to administration is unable or unwilling to act, letters of administration may be granted to the nominee of a party in such suit, limited for the purpose of representing the deceased in the said suit, or in any other cause or suit which may be commenced in the same or in any other Court between the parties, or any other parties, touching the matters at issue in the said cause or suit, and until a final decree shall be made therein and carried into complete execution.