Frederick Martin Koenig (9/4/1845 – 3/28/1918) and Sophia Peters Koenig (3/25/1856 – 4/17/1925) of Oronoco had 12 children. I have been able to locate where all of them are buried (mostly Oronoco Cemetery) except for two. These are:

Frederick Ludwig Koenig (3/29/1878 – 7/13/1968)
Albert Carl Koenig, aka King (6/11/1884 – 5/7/1978)


I am trying to find out where they (and their spouses) were buried. Can anyone give any clues? I do not have obituaries for either of them. I imagine they are both in Oronoco Cemetery, but I do not want to assume.