Delaware Code Title 12. Decedents' Estates and Fiduciary Relations §  49A-108. Nomination of guardian of person or property;  relation of agent to court-appointed fiduciary

(a) The appointment by a court of a guardian or other fiduciary charged with the management of the principal's property or the care of the principal's person shall terminate all personal powers of attorney to the extent the powers held by the agent prior to the appointment of a guardian or other fiduciary are granted by such court to the guardian or other fiduciary.  The person serving as an agent of the principal pursuant to this chapter shall, upon the request of the agent and absent cause to the contrary, be appointed the guardian or other fiduciary in a proceeding under Chapter 39 of this title.

(b) After the appointment of a guardian or other fiduciary charged with the management of the principal's property or the care of the principal's person, the agent is accountable to such guardian or other fiduciary as well as to the principal as to any personal powers of attorney which the agent continues to hold.  A guardian or other fiduciary shall only have such powers to revoke or amend the powers of the agent as shall be given to such guardian or other fiduciary by the court.