Searching for decendants of Jacob W. Robertson & Sarah Ann J. Mason Sarah Ann J. Mason b. 1831, Virginia m. Jacob W. Robertson September 03, 1856, Albemarle County, Virginia. Sarah was the daughter of Valentine M. Mason b. 1783 Stafford Co. VA, d. 15 July 1843, Amelia Co., VA, m. 1804, Rockbridge Co., VA, Elizabeth Margrave b. 1783, d. befor 1843. Elizabeth Margrave was the daughter of Thomas Margrave (1763-1797) and Mary Magent of Rockbridge Co., VA.