Magister Libellorum
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
In Roman law. Master of requests. MAGISTER NAVIS (Lat.) In civil law. Master of a ship; he to whom the whole care of a ship is given up, whether appointed by the ovsmer, or charterer, or master.
Calv. Lex.; Story, Ag. § 36.