Portrait & Biographical Album of Henry County, Illinois, pg 405, shows them as Jacob's parents.
Muller, John B., histories of the Minch and Goembel Families, shows town.
Findagrave.com, online, memorial # 41154936, Sebastian Gimbel, shows date, and includes photo of stone, but stone is obviously new. Shows age as 76 y 7m 16 d, which agrees to within one day of birth date from baptismal record.