Consider this:
Richmond Co., NC was formed in 1779 from Anson Co., NC.
Anson Co., NC was formed in 1750 from Bladen Co., NC.
Bladen Co.,NC was formed in 1734 from New Hanover Co.,NC
New Hanover Co.,NC was formed in 1729 from Craven Co.NC
Craven Co.,NC was formed in 1712 from Precent Bath Co,NC
Bath Co.,NC was formed in 1696 and discontinued in 1739.
Notes from:
http://www.terry-family-historian.com/TFHJUN1983.htm