William Pope Duval was the first and longest-serving (twelve years) Territorial Governor of Florida.
After forming the Kentucky Mustangs, the group traveled to Texas to fight for independence from Mexico.
Captain Duval and his men began to retreat with the regiment, however, by the time the order came, the Mexican army under the command of José de Urrea had completely surrounded the town of Goliad.
A week following the surrender, Antonio López de Santa Anna ordered the execution of most of the captured men.
Colonel Fannin, Burr Duval and almost 400 other men were executed on March 27 in what became known as the Goliad Massacre.