The only successful European impresarios in mid-nineteenth century Mexican Texas--men authorized to bring immigrants to settle the vast spaces of Mexico's northern territories--were Irish. On their land grants, Irish settlers founded Refugio and San Patricio and went on to take active roles in the economic and political development of Texas. It required a hardy spirit and strong ambition to weather the perils that accompanied these opportunities--the long journey, shipwrecks, hostile Indians, injury and disease--and Irish pioneers proved fit for the task. They were not seeking relief from...