VIGESIMUM, AD.
1. A station in Gallia Narbonensis, the distance of which from a given point determined its name, as we see in the case of other names of places derived from numerals. [DUODEOCIMUM, AD; VIENNA.] The place is xx. M. P. from Narbo ( Narbonne) on the road to Spain, and may be at or near a place called La Palme.
2. There is another Ad Vigesimum which occurs in the Itin. of Bordeauxto Jerusalem, on the road from Toulouse, These numerals show that such cities had the privilege of reckoning their roads from the capital to the limit of their territories, where a Fines often occurs. [FINES] (D'Anville, Notice, &c. ) [G.L]