The Spanish surname Romero  is of  nickname  origin deriving from the term romero  meaning “a pilgrim.” The name Romero was used to identify one who had returned from a pilgrimage, usually of a religious nature and frequently a pilgrimage to Rome. The name Romero . The name Romero is first recorded in 16th Century Spain where Adrian Romeu was recorded in Anso, Huesca, Spain, in 1515, and Christian Romeo at Zaragoza, Spain, on September 6th 1564.The name is first recorded in the US in Santa Clara, California in 1776.  Learn more about family crest jewelry.