Hi Lori! I looked in my book, and the only person in my book (from 1983) is Nathan McCumber. His info is as follows:
McCumber, Nathan - Birthplace NY, Birthdate ca. 1809, Indiana Co Settled and Date Settled: Cass 1837/ Fulton by 1840/ Starke by 1850, Previous Residence Ohio.
This just means that no one has proven your other ancestors as pioneers according to the society. So if you are interested, here is the website for the society: http://www.indianapioneers.com/