In 1860 Henry Bennetts was the sole executor of his father's will, 'now residing at Rockland in the county of Ontonagon in Michigan in one of the United States of America,' Letters of Administration being granted to Henry's brother and attorney William Bennett of St. Blazey.
In the 1860 U.S. Federal Census Henry Bennetts, aged 42, born in England, miner, was in Rockland Township, Ontonagon, Michigan.