Edrum

Dictionary of Greek and Roman Geography

EDRUM( Idro), a town of Gallia Transpadana, situated on a considerable lake, now called the Lago d'Idro, formed by the river Cleusis or Chiese. Neither the lake nor the town is mentioned by any ancient author, but an inscription cited by Cluver ( Ital. p. 108) proves the name and existence of the latter: it was probably not a municipal town, but a dependency of Brixia.
[E.H.B]