Riding the rough and sometimes bloody peaks and canyons of border politics, Santos Benavides's rise to prominence was largely the result of the careful mentoring of his well-known uncle, Basilio Benavides, who served several terms as alcalde of Laredo, Texas, and Chief Justice of Webb County. When the Civil War erupted in 1861, Basilio was one of only two Tejanos in the state legislature. During Santos's lifetime, five flags flew over the small community...