conservator

noun5

1. •
   One who conserves, preserves or protects something.

   • Chlouveraki, a tenacious archaeological conservator, has salvaged antiquities all over the Middle East. — 2014
2. •
   A professional who works on the conservation and restoration of objects, particularly artistic objects.
3. •
   A person appointed by a court to manage the affairs of another; similar to a guardian but with some powers of a trustee.

   • The lords of the secret council were likewise made conservators of the peace of the two kingdoms. — 1702
4. •
   An officer in charge of preserving the public peace, such as a justice or sheriff.
5. •
   A judge delegated by the pope to defend certain privileged classes of persons from manifest or notorious injury or violence, without recourse to a judicial process.