frumváttr (ON) noun

A witness who was present at an event and can give testimony to it. Usually refers to a witness who is ill or otherwise unable to travel and give testimony when needed. In such a case the testimony of an indisposed frumváttr could be taken by two other men who then presented the original testimony at court.

original witness OIce Grg Misc 252
OIce Js Kab 2
ONorw GuL Løb, Olb Refs:

CV s.v. frumváttr; Fritzner s.v. frumváttr; Hertzberg s.v. frumváttr