Legal Definitions - ultroneous witness

An ultroneous witness is a witness who comes forward voluntarily without being summoned to appear in court. This term is used in Scots law.

Example: John witnessed a car accident and went to the police station to report what he saw. He was not called to appear in court, but he showed up on the day of the trial and offered to testify. John is an ultroneous witness.

This example illustrates how an ultroneous witness is someone who comes forward on their own accord to offer testimony, rather than being called upon by the court or a party in the case.