Warpath on Family Tree Circles

I'm looking for the parent's of a Michael Bock born 1756/1757 in Fredricktown, Md. and died in Marion County. W.Va. Michael was in the Rev. War he signed up in Harrison County, Va. but Harrison County is now W.Va. I can't find his father but the family has always been told that his name was Hans Michael Bock from Germany, and that he came over at a very early age. I found a Hans Michael Bock that came to the United States in 1731 on the ship Brittina of London out of Rotterdam with his parents Leonard and one more son and three sisters and the mother Elizabeth Kiffer. This Hans was only two years old, and he would have been twenty-eight when my Michael was born or there about. Help if you can.
Thank You
Kathy