Matrona

MATRONA or MATRONAE MONS is the name given by later Latin writers to the pass of the Mont Genêvre, from Segusio (Susa) to Brigantia ( Briançon), which was more commonly known by the general appellation of the Alpes Cottiae. The pass is described in some detail by Ammianus, from whom it appears that the name was applied only to the higher part, or actual pass of the mountain: and this is confirmed by the Jerusalem Itinerary, which gives the name of Alpes Cottiae to the whole pass from Ebrodunum ( Embrun) to Segusio, and confines that of Matrona to the actual mountain between Brigantia ( Briançon) and Gesdao ( Cesanne). (Itin. Hier. p. 556; Amm. 15.10.6.)
[E.H.B]