By research available on this line and research of others, your ancestors parents were Nathaniel Burwell Malone and wife, Mary Green Jackson, d/o RWS Reuben B. Jackson and Hannah (Tucker) Jackson.He was born 4-28-1800 in Sussex Co., Va. and died in Limestone Co., Alabama in 1828. This information and that of other descendants of this family include Thomas Malone b. 1828 and marrying in Oxford, Ms. 1848 Nancy Keziah Borroum 1833 Greenville, SC-1880 San Antonio, Texas. The descendants are as you mention.He died in Mineral, Bee Co., Tx. and his mother is in Bee Co with sons up to her death at age 98.Perhaps he is buried in San Antonio Tx. with his wife, or perhaps with his mother in Bee County? Do you know where second wife, Maggie Looney is buried? I would check this too. The sons of Nathaniel lived with an uncle in Holly Springs, Ms. after their father died.