When Oliver H Blanchard was born in 1793, in Clarendon, Rutland, Vermont, United States, his father, Reuben Blanchard, was 31 and his mother, Amy Seamans, was 30. He had at least 3 sons and 3 daughters with Orinda Worden. He lived in Almena Township, Van Buren, Michigan, United States in 1860 and Victory, Cayuga, New York, United States in 1865. He died on 17 March 1874, in North Victory, Sterling, Cayuga, New York, United States, at the age of 81, and was buried in Victory, Cayuga, New York, United States.