In answer to your question, no we have yet to find the burial location of Jacob Seaver and are presuming that he is/was buried on his homestead in Switzerland County, Indiana in about 1824.
In 2010, my husband and I traveled to Switzerland County, Indiana and located Concord Cemetery. It is a beautiful little cemetery. I took photos of the gravestones of Esther Seaver and other family members who are buried there and posted them to FindAGrave.
Since that time, as I got further along in my 'Seaver' research, I found that there were a number of other family members buried there that I didn't know at the time and therefore didn't take pictures of their gravestones. I am hoping to get to make another trip there someday.
I hope this helps. Kim