I have the DAR record for Conrad. It is inconclusive on which Conrad was in the war, and as yet it is unproven whether he died there. There is a record of muster that proves a Conrad Bloss was at Perth Amboy. The DAR record proves that the applicant is a descendant of Johan Conrad Bloss AKA Conrad I who came to US in 1742 from Germany, but fails to prove that he is the Conrad who was in the war.
I would be interested to know more info on the Blaus your are looking for. I am not aware of any old records of any Bloss or Blose in York county . There were Blouse's there though. I have not seen a connection to them.