curator

n. person in charge of a museum; custodian, guardian, caretaker

Curator is Latin and means guardian or A curator of a cultural heritage institution (e.g., archive, gallery, library, museum or garden) is a content specialist responsible for an institution's collections and their associated collections catalogs. The object of a curator's concern necessarily involves tangible objects of some sort, whether it be inter alia artwork, collectibles, historic items or scientific collections
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Noun
1. the custodian of a collection (as a museum or library)
(synonym) conservator
(hypernym) custodian, keeper, steward

n. curator, person in charge of a museum; custodian, guardian, caretaker

(n.)
One who has the care and superintendence of anything, as of a museum; a custodian; a keeper.
  

(n.)
One appointed to act as guardian of the estate of a person not legally competent to manage it, or of an absentee; a trustee; a guardian.