Protonotary

noun

1. A chief legal clerk or notary in Roman Byzantium, and (hence) in Rome.
2. One of the seven prelates, constituting a college in the Roman Curia, whose office is to register pontifical acts and to make and preserve the official record of beatifications.
3. A registrar or chief clerk in various courts of law, especially (US) in a county court, (Australia) in certain state Supreme Courts.
4. (Greek Orthodox Church) The chief secretary of the patriarch of Constantinople.