Black is the former head of the Hollinger International newspaper empire. He'd been accused of swindling shareholders out of millions of dollars.
A federal court jury of nine men and three women delivered their verdict after deliberating eleven days following 14 weeks of testimony at the racketeering and fraud trial.
Black is a member of the British House of Lords. He faces a maximum of 35 years in prison for the offenses the jury convicted him of -- plus a maximum penalty of $1 million.