Joseph Joel Yarbrough (1821-1896), known for a good part of his life as Captain Joe. Owner of Yarbrough Mills on the Yarbrough Mill Road in Caswell County, North Carolina. Also purchased the Gus Yarbrough Mill on Country Line Creek and developed the site into an industrial center that included a foundry, wood-working shop, blacksmith shop, general store, and post office (Yarbro).
Source: The Heritage of Caswell County, North Carolina, Jeannine D. Whitlow, Editor (1985) at 614 (Article #846).
Yarbrough's Foundry was an ironworks near Milton, N.C., operated by Joseph Joel Yarbrough (1821-1896). Materials consist of a patent issued to Joseph Joel Yarbrough of Milton, N.C., for an "Improvement in Dressing Millstones," 1860, and a mimeographed typescript of "Yarbrough's Foundry: A Paper Read Before the Caswell County Historical Association, April 13th, 1960, at Yanceyville, N.C." by E. S. Yarbrough.
Source: Caswell County Historical Association Collection (1791-2000s), The Southern Historical Collection at the Louis Round Wilson Special Collections Library (University of North Carolina, Chapel Hill, North Carolina).
How Millstones Work.