This family of Hamiltons migrated to Sparland Marshall Co., Illinois ca 1851 . I believe Issac Hamilton is a brother to Margaret Hamilton wife of Milton Osborne whom also migrated to Sparland Illinois area from Red Bank Township, Armstrong co., Pa. same time period. Parents of Issac and Margaret Hamilton not known at present.Thanks Jerry Redbank Township, Armstrong County, PA October 1, 1850 By Hugh Campbell Page 543 * 107 110 Isaac Hamilton 35 M (Blank) PA Sarah " 30 F PA Charles " 14 M PA X Elizabeth J. " 12 F PA X Melica " 10 F PA X Nancy " 8 F PA X David " 6 M PA John " 2 M PA Pa. Census 1840 Osbourn, Milton Armstrong Co., Pa. 1840 021 (Page 1850 Armstrong co., Pa. Census 539) Book Page 272 Listed D *** 77 79 William Ausbunn 33 M Carpenter 200 PA Margaret " 32 F PA Jane " 12 F PA X Mary A. " 10 F PA X Amanda " 8 F PA X William N. " 5 M PA X Winfrild S. " 2 M PA *** - indicates that on the census it looks more like Milton, but William was put in the book.