Old St. Landry Parish; trailrides; Grand Mamou and ÔTit Mamou; Andrew Aaron Mouton; driving cattle; Nez-Pique Indian saddle; horse equiment terms--Spanish; snakebite prevention; Texas driverÕs route through Lafayette; swimming herds across the Atchafalaya; New Texas landing; Vacherie to New Orleans; Carencro land grant; Carencro name origin; Bayou Carencro; Mermentau;