William Jarvis Cannan, soldier at the battle of San Jacinto, was born in Edgefield, South Carolina, in 1808 and moved to Texas in 1835. He was in the Texas army from March 1 to November 1, 1836, and took part at San Jacinto as a private in Company H, First Regiment of Texas Volunteers, under Robert Stevenson. For his service Cannan was granted a bounty warrant for 640 acres in Brazoria County. In 1837 he married Matilda Jane Lonis. They had four sons and a daughter. After his wife's death at Brazoria in 1850, Cannan married Parmelia A. Wilcox; they became the parents of three sons and a daughter. Throughout the Civil War and Reconstruction era, the Cannan family figured prominently in the Texas cotton trade. Cannan died in September 1881 and was buried in the Oyster Creek Cemetery four miles from Velasco.