Note 150 — LIFE OF SERTORIUS.
George Long translation
The Tagonius is either the Tagus (Tajo), or a branch of that large river, on the banks of which the Carpetani are placed by geographers, who also mark Caraca, a position on the Henares, a branch of the Tagus. If Caraca represents the country of the Charicatani, the Tagonius is the Nares or Henares, on which stood Complutum, the modern Alcalá de Henarea. But all this is merely conjecture.