Claviger? Turns out, that is the correct word for Keyholder!
claviger - noun clav·i·ger \ˈklavə̇jə(r)\ plural -s : one that keeps the key or keys: custodian, warden Why wasn't I notified about this until now?!?
claviger - noun clav·i·ger \ˈklavə̇jə(r)\ plural -s : one that keeps the key or keys: custodian, warden Why wasn’t I notified about this until now?!?