R. B. Forrester may have been Deleon’s biological father according to Tom Gentry.
Johnson Co., TN Court 2 April 1888 Petition from James C. Donnelly (the reported father of both boys) to adopt both De Leon Foster and Samuel Oscar Foster granted so their surnames were changed from Foster to Donnelly. (SV-1090)
John Donnelly says that James C. Donnelly and Mary E. Cress lived together for several years in Ashe Co., NC until he could get his divorce. This that fact and the petition are proof that James C. is the father of Deleon and Oscar.