Conn. Gen. Stat. § 49-12
The executor of the will or the administrator or trustee of the estate of any deceased nonresident, or the conservator or guardian of any nonresident person, may, by a release or assignment executed in the manner required for the execution of instruments conveying title to real estate in this state, release or assign any mortgage of real estate held by such deceased or nonresident person in this state, provided the executor, administrator, trustee, guardian or conservator shall file for record, with the town clerk of the town in which the real estate is situated, a certificate of his appointment and qualification, issued by the court having jurisdiction of the settlement of the estate of the deceased or the estate of the nonresident person.
Conn. Gen. Stat. § 49-12
(1949 Rev., S. 7116; 1953, S. 2953d; P.A. 79-602, S. 71.)