Judex Datus
A Dictionary of Law · Henry Campbell Black · 1891
A Dictionary of Law
In Roman law. A judge given, that is, assigned or appointed, by the praetor to try a cause. Judex debet judicare secundum allegata et probata. The judge ought to decide according to the allegations and the proofs.
Judex est lex loquens
A judge is the law speaking, [the mouth of the law.] 7 Coke, 4a.