Dr. and Mrs. John B. Harmon were the parents of six children and an adopted one.
Of these John B. Harmon, Jr., born October 29, 1822, was graduated at Yale in 1842, and is a prominent lawyer of San Francisco. He was, in 1878-'79, Grand Master of the Odd Fellows, and he was tendered a reception by them in Warren, on October 4, 1878, in which the citizens universally joined, making it by far the grandest celebration ever held in that city, if not in the State. Six hundred and seventy-two guests sat at the table at one time in the Methodist church, and the details of the entertainment have passed into local history.