ST. JOHN, N.B. — The family of Canadian billionaire businessman James K. Irving has announced his death at the age of 96, just over a month after the death of his younger brother, Arthur.

Along with late brother John, they were sons of New Brunswick industrialist K.C. Irving and were among Canada’s richest people. John Irving, known as Jack, died in 2010.

James Irving was the chairman of the privately owned J.D. Irving, based in Saint John, N.B., a conglomerate with interests spanning manufacturing, infrastructure, shipbuilding and agriculture. Its website says it was founded in 1882 and operates in Canada and the United States.