In I'll Die Before I'll Run the prominent historian C.L. Sonnichsen leaves no doubt that bad blood so often turned into bloody feuds in Texas because there the folk law of the frontier was reinforced by the unwritten code of honor of the South, and because everybody in Texas went armed. Although the Regulators and Moderates warred in eastern Texas in the 1840s, the really big feuds were ignited by the Civil War and flamed until late in the century,...