Duplin County, North Carolina: History
The county was formed in 1750 from New Hanover County. It was named for Thomas Hay, Viscount Dupplin (later 9th Earl of Kinnoull), as he was known when he served on the Board of Trade and Plantations in England in the 1740s.
In 1784, the western part of Duplin County became Sampson County.
John Miller, a merchant in Duplin, was appointed as postmaster. In the 19th century, he migrated to Leon County in the panhandle of Florida, with other North Carolinians during the period of Indian Removal in the 1830s–1840s. There, he developed a successful cotton plantation. He called it Miccosukee Plantation, after one of the Seminole bands. (They are now a federally recognized tribe.)