In the case of a corporation established as a trust company under this chapter, the powers conferred by § 761 of this title shall include the right or power to be appointed executor of a will, codicil or writing testamentary, administrator with the will annexed or administrator of the estate of any decedent, receiver, assignee, guardian, conservator or trustee by will or by any written instrument or other act of the parties, or by any court or official, under the same circumstances, in the same manner, and subject to the same control by the court having jurisdiction of the same, as a legally qualified individual.