Allendale County and its county seat of Allendale were named for the Allen family, one of whose members, Paul Allen, was the town's first postmaster. The county is South Carolina's youngest; it was formed in 1919 from parts of Barnwell and Hampton counties. The area was settled in the mid-eighteenth century by English, German, and Scotch-Irish farmers, and it remains primarily agricultural. The plantation of Confederate general Johnson Hagood (1829-1898) was in what is now Allendale County, and the artist Jasper Johns spent his childhood years in Allendale.
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