During the 19th century, modest farmer as well as the giants of Texas cattle culture registered their cattle brands and marks at county courthouses. Bexar County’s Spanish Archives possesses a wealth of cattle brands registrations dating to the Spanish Colonial period. These brands are a Texas legacy akin to European heraldry. They tell us about where individuals grazed their cattle, how herds changed hands and how individual brands evolved over time. Many of the legends of Texas trail drives first registered brands in old East Bexar County. The brands in this presentation are primarily from the mid 19th century, associated with the Cibolo, Chupaderas and Martinez watersheds.