When Cynthia Duncan Gibson was born on 13 December 1827, in Castlewood, Russell, Virginia, United States, her father, William Gibson, was 32 and her mother, Tabitha Dickenson, was 23. She married Harvey Gilmer or Gray Long on 31 January 1850, in Russell, Virginia, United States. They were the parents of at least 4 sons and 5 daughters. She lived in Civil District 10, Washington, Tennessee, United States in 1900 and District 10, Grainger, Tennessee, United States in 1900. She died on 8 November 1900, in Washington, Tennessee, United States, at the age of 72, and was buried in Union Cemetery, Washington, Tennessee, United States.
English: from the Middle English and Older Scots personal name Gibb (a pet form of Gilbert) + son, hence ‘son of Gibb’. The name is very common in Ireland, having arrived in that country in the 17th century. It is also occasionally adopted for Ó Gibealláin, see Giblin .