Hanover Insurance began in 1852 as a Property and Casualty company, building success and respect over nearly two centuries. Now Allmerica Financial Corporation, the parent company of Hanover Insurance and Citizens Insurance, has changed its name to The Hanover Insurance Group, Inc. This time-honored name will lead us through the 21st century as we build a world-class company focused on Property and Casualty and re-energized to meet the needs of our Independent Agents. Our promise to our clients and our partners is world-class performance.