Born: 1811-10-11 Kentucky
Flourished: Sangamon County, Illinois
O'Neal moved to Sangamon County, Illinois, when he was very young. He served in the Black Hawk War in two of the same companies as Abraham Lincoln. In 1847, he married Lucy Scoot, with whom he had six children. He had two other previous wives, with whom he had two children. O'Neal was a farmer and a client of Lincoln & Stuart and Lincoln & Logan.
History of Sangamon County, Illinois (Chicago: Inter-State, 1881), 800; Muster Roll of Captain Elijah Iles’ Company of Mounted Volunteers; Muster Roll of Captain Jacob M. Early’s Company of Mounted Volunteers; For Lincoln's cases with O'Neal, search "O'Neal, Samuel," Martha L. Benner and Cullom Davis et al., eds., The Law Practice of Abraham Lincoln: Complete Documentary Edition, 2d edition (Springfield: Illinois Historic Preservation Agency, 2009), http://www.lawpracticeofabrahamlincoln.org.