Battle of Concepción was led by James Fannin and 19th century American pioneer, James Bowie, who died where?
James Bowie James "Jim" Bowie (pronounced ) (  1796 – March 6, 1836) was a 19th-century American pioneer, who played a prominent role in the Texas Revolution, culminating in his death at the Battle of the Alamo. Stories of him as a fighter and frontiersman, both real and fictitious, have made him a legendary figure in Texas history and a folk hero of American culture.
William Mayfield William Mayfeild (1810–1862) was an American pioneer in Illinois, Texas, and California; a soldier, farmer, miner, and a cattleman. He led Tulare County militia to aid settlers in the early part of the Owens Valley Indian War and was killed in the Battle of Mayfield Canyon.