James Cady Chaffee, who was married to his 3rd cousin Lucy Adaline Chaffee, left his wife and took up with Melinda Sales Denny. By his wife he had 11 children, including my great grandfather, Albertus. By Melinda he had 2 or 3 children. He supposedly died in Sterling, Whiteside Co, IL. The children of this second relationship (I don't know if they married) were James, Alvin, and A.P. James Cady Chaffee (possibly) died June 26 1882, Sterling, Whiteside, IL. A Malinda Chaffee married Mathias Reichenbach, Whiteside Co., IL, 08/31/1883, which would fit, but whether this is the same Melinda, I don't know.