Charles Pinckney (1699-1758) m. Eliza Lucas (1722-1793). The four children born to them: Charles Cotesworth Pinckney (1746-1825), George Lucas Pinckney (1747-1747), Harriott Pinckney (1748-1830) and Thomas Pinckney (1750-1828) -- from The Heritage of Pinckneys of Pinckney Colony by Mary Pinckney Powell, p. 31. I don't see a Charles born in 1757 but perhaps he has a middle name. There were so many Charles(es) in the Pinckney Family. Born in 1757, I would think he is not a son of Charles & Eliza because their son Charles was still living. It would be unusual to name a new son by the same name as a living one.