 The practice from which these patronymics arose also gave rise to the filiation, which in later times, once the nomen had become fixed, nearly always followed the nomen.Other nomina were derived from names that later came to be regarded as cognomina, such as "Plancius" from "Plancus" or "Flavius" from "Flavus"; or from place-names, such as "Norbanus" from "Norba".The binomial name consisting of "praenomen" and "nomen" eventually spread throughout Italy.