True, Cyrus
Cyrus True was involved in the transfer of land in Adams County, Illinois, which was at issue in a federal court case in Springfield, Illinois in which Abraham Lincoln was an attorney for the plaintiff.
Powell v. Ament & Beer, 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/Details.aspx?case=137595.