Background: James "Jim" Bowie (pronounced  BOO-ee) (c. 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. Born in Kentucky, Bowie spent most of his life in Louisiana, where he was raised and where he later worked as a land speculator. His rise to fame began in 1827 on reports of the Sandbar Fight.
Context: According to his older brother John, James Bowie was born in Logan County, Kentucky, on March 10, 1796 (Historical marker: 36deg 46' 25"N 86deg 42' 10"W). Historian Raymond Thorp gave his birth date as April 10, but Thorp did not provide any documentation for that date. Bowie's surname was pronounced to rhyme with the French "Louis" ( BOO-ee). (Although some works refer to the alternate pronunciation  BO-ee.)  Bowie was the ninth of ten children born to Reason (or Rezin) and Elve Ap-Catesby Jones (or Johns) Bowie. His father had been wounded while fighting in the American Revolutionary War, and in 1782 married the young woman who had nursed him back to health. The Bowies first settled in Georgia and then moved to Kentucky. At the time of Bowie's birth, his father owned eight slaves, eleven head of cattle, seven horses, and one stud horse. The following year the family acquired 200 acres (80 ha) along the Red River. They sold that property in 1800 and relocated to what is now Missouri, before moving to Spanish Louisiana in 1802, where they settled on Bushley Bayou in what soon became Rapides Parish.  The family moved again in 1809, settling on Bayou Teche in Louisiana before finding a permanent home in Opelousas in 1812. The Bowie children were raised on the frontier and even as small children were expected to help clear the land and plant crops. All the children learned to read and write in English, but James and his elder brother Rezin could also read, write, and speak Spanish and French fluently. The children learned to survive on the frontier and how to fish and run a farm and plantation. James Bowie became proficient with pistol, rifle, and knife, and had a reputation for fearlessness. When he was a boy, one of his Indian friends even taught him to rope alligators.  In response to Andrew Jackson's plea for volunteers to fight the British in the War of 1812, James and Rezin enlisted in the Louisiana militia in late 1814. The Bowie brothers arrived in New Orleans too late to participate in the fighting. After mustering out of the militia, Bowie settled in Rapides Parish, where he supported himself by sawing planks and lumber and floating them down the bayou for sale. In June 1819, he joined the Long Expedition, an effort to liberate Texas from Spanish rule. The group encountered little resistance and, after capturing Nacogdoches, declared Texas an independent republic. The extent of Bowie's participation is unclear, but he returned to Louisiana before the invasion was repelled by Spanish troops.
Question: Who is rezin?

Answer:
Bowie was the ninth of ten children born to Reason (or Rezin) and Elve Ap-Catesby Jones (or Johns) Bowie.