As well as being arch chancellors of the Holy Roman Empire, bishops generally served as chancellors to medieval monarchs, acting as head of the justiciary and chief chaplain.
From the en.wikipedia.org
More examples
Justiciar: formerly a high judicial officer
The jurisdiction of a justiciar
Officer. Another name for a judge. In Latin, he was called justiciciarius, and in French, justicier. Not used. Bac. Ab. Courts and their Jurisdiction, A.