I don't find any marked graves in Wayne Twp. for Nathaniel or Noah Porter.The only marked Porter grave at Daugherty is for Elizabeth (1849-1851), daughter of Andrew Porter and Mary Ann Cox.There are a couple of other Porter graves, Isaac and Charles, sons of W.H. & S. Porter, at Bethel Baptist Cemetery, which is not far from Daugherty Cemetery.But no Nathaniel or Noah; I can't find these on 1850 census anywhere in the area.I have good databases on local records--do you have parents for these boys?
Bartholomew Co. obits only go to 1872, and aren't really very complete until after 1910 or so.Civil death records begin in 1882 in Indiana.
Donna Kuhlman Bartholomew Co. Genealogical Society