Joseph Clark, grandfather of Hamilton Clark, was born in Rhode Island, Sept. 14, 1728. He married Deborah Pendleton, June 11, 1752. She was born May 9, 1737. They had fifteen children, the youngest of whom was Benjamin, who was born on the 4th of June, 1781, in Rhode Island. He settled in Petersburgh at an early day, and was a blacksmith and farmer by occupation. He married Mary Stillman, of whom six children were born, viz.: Albert, Hamilton, Franklin, Lorenzo (deceased), Mary (deceased), and Edwin.