Elbert Brooks Shumway was the adopted son of Mary Brooks Kellogg. She was his aunt and adopted him after the death his mother.
They resided in Oshkosh, Wisconsin.
See
http://books.google.com/books?id=e0LPueQvPtEC&pg=PA1104&dq=Shumway+oshkosh#PPA1104,M1
BURIED: Oah Hill Cemetery, Oshkosh, Winnebago, Wisconsin