Most of us have had to use a Notary Public at some point in our lives, though we could not, for the life of us (lives of us?), tell you what value the Notary added.
Most of also know that courts have clerks for the same reason that, say, buildings have janitors or certain movie sets have fluffers. Namely, someone has a dirty job that keeps the whole operation flowing.
Enter Pennsylvania, whose state courts have "Prothonotaries." Prothonotaries, obviously, evolved from Triloclerks, moving out of the Rolodex, erecting counters, and eventually evolving the computerized bar-code filing formats that can only be accessed through the passing of long forms in triplicate with payment under glass that we have come to expect from modern-day clerks.
Actually, the terms is ecclesiastical, coming from the Greek: protonotari, meaning "first scribe." Insert funny closing zinger here.