I found about 335 Barnards in the 1870 Pennsylvania federal census.
1870 United States Federal Census > Pennsylvania > Armstrong > Cowanshannock image 11
Barnard (spelled Bernard) George A, age 60, stock drover
Barnard Rosanna, age 53 ?, Keeping House
Barnard John, age 20, Farmer
Return to Barnard Dierlam Census History