Egerius
the son of Aruns, who was the brother of L. Tarquinius Priscus [ARUNS, No. 1], was born after the death of his father; and as Demaratus, the father of Aruns, died shortly after the death of his son without knowing that his daughter-in-law was pregnant, none of his property was left to Egerius, from which circumstance, according to the legend, he derived his name. When the town of Collatia was taken by his uncle Tarquinius Prisons, Egerius was left in command of the place, and henceforth received, according to Dionysis, the surname of Collatinus thoughh this name is usually confined to his son L. Tarquinius Collatinus). Egerius was afterwards sent against Fidenae in command of the allied forces of Romie. [COLLATINUS.] (Liv. 1.34, 38; Dionys. A. R. 3.50, 57, comp. 4.64.)
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.