confirmor
Confirmor is a noun meaning a person or thing that confirms something. In general usage the term refers to an agent who attests to the validity of a statement, document, or grant. It is most common in historical or legal contexts and is seldom used in everyday speech. The word is often found in discussions of charters, deeds, or formal confirmations.
Etymology and form: Confirmor derives from Late Latin confirmator, based on confirmare, with the English agent
Legal and historical use: In medieval and early modern practice, charters and grants were sometimes confirmed
Religious context: In the context of sacramental or ecclesiastical confirmations, the ordinary minister is the bishop
Modern usage: The term is largely academic or archaic. In current legal or administrative language, more common