Mr Cooper was the brother of Buckley Cooper. The two had a long-running feud, which escalated to the point that, after Mr Cooper sent Buckley a cursed broomstick, Buckley wrote to the Daily Prophet asking whether it would be advisable to kidnap Mr Cooper's children and turn them into blood-sucking ferrets.
Mr Cooper was the brother of Buckley Cooper. The two had a long-running feud, which escalated to the point that, after Mr Cooper sent Buckley a cursed broomstick, Buckley wrote to the Daily Prophet asking whether it would be advisable to kidnap Mr Cooper's children and turn them into blood-sucking ferrets.