I am looking for the DOD for Sophia Mae Kretzer Knadler. Born December 4, 1810 to Daniel Kretzer and Catherine Beall in Sharpsburg, MD. She married Peter Knadler in Hagerstown and then moved her family to Carroll Township, IL somewhere around 1850-60. With the exception of her oldest son Mahlon Knadler who stayed in MD.

I am on her trail until 1860-70, he husband appears as a widower in the 1870 census.

I can not find her with any of her children in the late 1800 either in MD or IL.

Any help would be appreciated