HE´RIUS
HE´RIUS (
Ἥριος). Ptolemy (
2.8.1) places the Herius on the coast of Gallia Lugdunensis, between
[p. 1.1057]the Brivates Portus and the Vindana or Vidana Portus. Ptolemy's latitude of the mouth of the Herius (49 1/4°) makes it nearly as far north as the outlet of the
Seine. D'Anville [
DURETIE] supposes the Herius to be the
Vilaine, the first large river north of the
Loire. He adds (
Notice, &c., Herius Fluv.) that the passage of the
Vilaine between
Roche-Bernard and the mouth of the river is now called
Treig-hier, and that we may readily believe
Treig-hier to be a corruption of Trajectum Herii.
This may be so; or
Treig-hier may be the old Celtic name. Some geographers assume the Herius to be the small river
Auray north of the
Vilaine; but this is only a guess like the other. [
G.L]>