Among some papers, I found a letter and 5-generation chart from Cecil Coston (Lewisville, Tx). He writes that John Coston (his grandfather) was born May 1,1826 in Anslow County, NC. Married on Apr 22, 1847 to Mary Ann Elizabeth Callaway who was born on Sep 18, 1827 in Georgia. He was a doctor and Methodist or Presbyterian minister. He died on Aug 9, 1894 and was buried in Pyron Cemetery in Scurry Co, Tx. She died on May 29, 1908 and was buried in Boggy Cemetery in Bosque Co, Tx.
John Fletcher Coston was the 5th child of 11 and was born Apr 5, 1857.
Cecil writes that all the children were farmers or ranchers, except his father Thomas Cecil Coston born Jan 23, 1872 and Green Monroe Coston born May 15, 1859 who were both medical doctors in Bosque Co, Tx.