Perhaps you'd want to get Joseph's death certificate from the state's Division of Vital Records.They only cost $9 and if filled out fully will give the names of his parents and their birthplaces.There is also a blank for his birthplace which may or may not be specific as to location or may just say Pennsylvania for example.I have seen instances where the specific county was given on the death certificate.Knowing his parents' names would hopefully enable you to follow the family in the censuses. The death certificate will list the cemetery where buried which could be very helpful in your family research also.
Go to the Department of Health's website at http://www.dsf.health.state.pa.ushttp://www.dsf.health.state.pa.us and click on the link to birth and death certificates in the left hand column and you'll see more information.
You neglected to give an approximate birthdate for Joseph C making it difficult for others to aid you or connect him to their own families in an earlier generation. Someone may have a missing Joseph C but not be aware of whom he married or who his children were for example.
My own ALLEN family originated in Cornwall, England and came to Pennsylvania to work in the mines in the 1860's so if Joseph was ever a miner or had parents who were born in England, please let me know as there could be a connection. My ALLENs were in Cambria and Clearfield Counties so quite close to Blair County.
Have you located him in specific censuses and if so which location in which year?