Hi -- My ancestors were very early settlers in Clinton County. Some stayed there, others moved to Vermillion County, Illinois. My g-g-g-grandfather was George Villars, married to Eleanor/Elinor Jane Harris -- the two of them stayed in Clinton County their whole lives. Their son Isaiah was my ancestor. His sister Susan first married James Cast and after his death she married his brother, John Cast, who was a widower at that time. I don't know his first wife's surname. I'm not sure if they stayed in Clinton County or moved to Illinois. Might this be the John Cast you are looking for?