Carolyn seeks Seitz, Oiler, Dredge, Kerrigan families

The Seitz, Oiler, and Dredge families settled in Pa. and then moved on to Illinois, especially the Piatt County area. Am seeking info as to parents of Abraham Seitz, Christian Oiler, and father of Jane Dredge.Abraham Seitz was b 2-29-1828 Cumberland Co., Pa. m Jane Dredge d 8-9-1864 Humbolt, Nebr. Christian Oiler m Susan Henry and had son Henry Christian Oiler b 10-10-1846 Newsville, Pa d 5-16-1869 Piatt Co. m Susanah Amanda Seitz b 5-5-1851 Perry Co., Pa. d 5-16-1922 Piatt Co., Ill.