Oromarsaci
Oromarsacī (-savī), ōrum, m. , peuple de la Belgique : *Plin. 4, 106.
OROMARSACI
OROMARSACI a people of North Gallia, whose position is thus described by Pliny (Plin. Nat. 4.100.17), who is proceeding in his description from the Schelde southwards:--Deinde Menapii, Morini, Oromansaci juncto pago qui Gessoriacus vocatur.I n Harduin‘s text the name is written Oromansaci, and yet he says that the MSS. have Oromarsaci. The name is otherwise unknown. D'Anville supposes that the name Oro-marsaci is represented by the name of a tract of country between Calais and Gravelines, which is Mark or Merk, and borders on the Boulonnois, in which the pagus Gessoriacus was. [GESSORIACUM.] This is mere guess, but it is all that we can have.
[G.L]