The grandsons of founder James Dergavel Irving – John, James, and Arthur Irving – grew the family business exponentially.

No. 6 Irving Family

1,246,000 acres (down 4,000 acres)
Based in New Brunswick, J.D. Irving Limited ranks as one of Canada’s largest privately owned companies and has wide-ranging commercial operations, including hydropower, shipbuilding, consumer products, transportation and logistics, and forestry and forest products. In the United States, Irving Woodlands has managed timberlands in Northern Maine for more than 60 years. It currently oversees 1.246 million acres; all are certified under the Forest Stewardship Council program. Related entities in Canada own an additional 2 million acres of timberlands in New Brunswick and Nova Scotia. Both the US and the Canadian forestry companies adhere to a 100-year management plan. In addition, all operations are regularly and independently audited according to ISO 14000 environmental standards and are certified under the Sustainable Forestry Initiative program.