Hi Tim, I think you have the date wrong of your census data. According to Cook County records, Celina Darche and Peter Fernekes were married 12/27/1891, license #175682. Irvin was born 1892 and Henry 1896. They were divorced by 1910, and Peter was married to someone named either Louise or Lizzie Hempka. By this time she is listed as cClina is listed as May C. Fernekes in the census and is running a hotel, with Henry and Irvin as well as a brother living with her. Peter and Lizzie's "Village Inn" was apparently notorious for attracting the wrong element.
Peter was born in Valparaiso, Indiana. His father, a baker named Charles, was born in Germersheim, Bavaria and emigrated about 1852. Peters' mother, Eva Griebel, was born in Germany, but I am not sure where. Census data indicates Bavaria. Charles' parents were Philip Anton Fernekes and Maria Catharine Schranck, both of Germersheim.
I am attaching a photo taken in the late 1860's of the Fernekes family. Philp Anton and Maria Catherine are seated in the foreground. Their only daughter, Magdalena, is standing behind them and teh five brothers are surrounding her. One of these brothers is Charles, but we do not know which one.