notarius

Latin nota meant a mark, sign, or note. Notarius was a professional note-taker — a shorthand writer who could keep up with spoken speech using abbreviated marks. Cicero's secretary Marcus Tullius Tiro developed a shorthand system called Tironian notes around 63 BCE; the notarii who used such systems were essential to Roman legal and administrative procedure. Without notarii, courts could not record testimony.

Medieval canon law gave the notary public a central role in ecclesiastical and civil legal systems across Catholic Europe. A notarial act — a document prepared and witnessed by a notary — had the force of a public record. The notary was both witness and authenticator: his presence, seal, and signature transformed a private agreement into a legally binding public act.

Common law jurisdictions (Britain and its legal descendants) reduced the notary's role: most document authentication was handled by solicitors. Civil law jurisdictions (continental Europe and Latin America) maintained the full notarial system. A French notaire or Brazilian tabelião still performs functions — property transfers, wills, company formation — that a solicitor handles in England.

The modern notary public in the United States is mainly an identity witness: confirming that the person signing a document is who they claim to be. The global notary is a much more powerful figure. Both trace to the Latin nota — the mark that makes a thing official.