conservator

noun

Etymology: From Middle English conservatour, from Anglo-Norman conservatour, from Latin cōnservātor (“one who conserves”), agent noun from cōnservō (“to preserve”).

1. One who conserves, preserves or protects something.

   “2014, Paul Salopek, Blessed. Cursed. Claimed., National Geographic (December 2014)https://web.archive.org/web/20150212214621/http://ngm.nationalgeographic.com/2014/12/pilgrim-roads/salopek-text Chlouveraki, a tenacious archaeological conservator, has salvaged antiquities all over the Middle East.”

   “the great Creator and Conservator of the world”

2. 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.”

   “The Governor [of Missouri] is […] the conservator of the peace”

3. An officer in charge of preserving the public peace, such as a justice or sheriff.
4. 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.
5. A professional who works on the conservation and restoration of objects, particularly artistic objects.