Poston, South Carolina belongs to the kind of Southern history that can disappear in plain sight. It is not a vanished city or a county seat that lost its courthouse. It is quieter than that: an unincorporated Florence County community near the Great Pee Dee River, where an older river place became a railroad junction, took a family name, and then settled back into the landscape after its brief period of promise had passed. That quietness makes the history easier to overlook and harder to reconstruct. The name Poston appears in family papers, cemetery markers, newspaper clippings, railroad references, county-locality materials, and modern placename usage. No single source tells the whole story. The usable history emerges only when those materials are put into order: first the family migration, then the Pee Dee settlement, then the older Ellison locality, then the railroad-era naming, then the later preservation of memory. The family story begins in Pennsylvania, not South Carolina. John Poston appears in Chester County in the early eighteenth century, connected to land on a branch of Octoraro Creek. His will names a household that became
the starting point for the later South Carolina line. From that Pennsylvania base, descendants moved south with the larger colonial migration into the Carolina interior. By the time the Postons appear clearly in the old Marion District, they had become part of the river country that later produced Florence County and the place called Poston. The place story begins before the name Poston. The older locality was tied to the Great Pee Dee River and to the working geography of Ellison, Allison Landing, Ellison's Landing, and Poston Landing. Those names are not merely spelling variants. They preserve the change from a river-centered world to a railroad-centered one. The river made the place useful. The railroad made it visible on a newer kind of map. Andrew Poston stands at that turning point. Born in 1829, he belonged to a family already rooted in the Pee Dee. He did not invent the earlier settlement. His importance lies in the railroad-era transformation. By giving land to the railroad, he helped carry the family name from local kinship and landholding into public geography. The town of Poston on the Seaboard was named for him, and the sentence that he gave land so that Poston might be Poston has become the key phrase in the history of the place. The modern family connection to that town is also layered. One branch carried the Poston surname forward through John Henry Poston. Another branch, closely tied to Andrew Poston's family, came through Louella Poston. Their marriage reunited the surname line and the founder-linked collateral branch in one household. Lawrence Chalmers Poston inherited that combined line and carried it into the twentieth century. Harold Chalmers Poston, Sr., Ruth West Poston, Harold Chalmers Poston, Jr., and later generations carried it into living memory and modern preservation. This book follows the history in that order. It treats
Poston as both family name and place name, as both genealogy and geography. The result is not a claim of grandeur. It is a reconstruction of continuity: a family that moved south, settled in the Pee Dee, gave its name to a railroad-era community, and preserved enough of the documentary trail for the story to be told again.