Complex sentence: Mary L. Wardlaw (1849 -?) who had married Fletcher Tillman Snead (1829-1891) in 1874 in Macon County, Georgia; and Virginia G. Wardlaw (1852-1910) who never married.
Split into simpler sentences: Mary L. Wardlaw (1849 -?), who married Fletcher Tillman Snead (1829-1891). The second sister was Virginia G. Wardlaw (1852-1910) who never married.