Exhibit 21
Direct and Indirect Subsidiaries of the Registrant
I. The Hanover Insurance Group, Inc. (Delaware)
| A. | Opus Investment Management, Inc. (Massachusetts) |
| a. | The Hanover Insurance Company (New Hampshire) |
| 1. | Citizens Insurance Company of America (Michigan) |
| 2. | Allmerica Financial Benefit Insurance Company (Michigan) |
| 3. | Allmerica Plus Insurance Agency, Inc. (Massachusetts) |
| 4. | The Hanover American Insurance Company (New Hampshire) |
| 5. | Hanover Texas Insurance Management Company, Inc. (Texas) |
| 6. | Citizens Insurance Company of Ohio (Ohio) |
| 7. | Citizens Insurance Company of The Midwest (Indiana) |
| 8. | The Hanover New Jersey Insurance Company (New Hampshire) |
| 9. | Massachusetts Bay Insurance Company (New Hampshire) |
| 10. | Allmerica Financial Alliance Insurance Company (New Hampshire) |
| 11. | Professionals Direct, Inc. (Michigan) |
| (i) | Professionals Direct Insurance Services, Inc. (Michigan) |
| 12. | Verlan Fire Insurance Company (New Hampshire) |
| 13. | The Hanover National Insurance Company (New Hampshire) |
| 14. | AIX Holdings, Inc. (Delaware) |
| (i) | Nova American Group, Inc. (New York) |
| 1. | NOVA Casualty Company (New York) |
| a. | AIX Specialty Insurance Company (Delaware) |
| (ii) | AIX, Inc. (Delaware) |
| 1. | AIX Insurance Services of California, Inc. (California) |
| 15. | 440 Lincoln Street Holding Company LLC (Massachusetts) |
| 16. | Campmed Casualty & Indemnity Company, Inc. (New Hampshire) |
| 17. | CitySquare II Investment Company LLC (Massachusetts) |
| (i) | Front Street Financing LLC (Massachusetts) |
| 18 | The Hanover Atlantic Insurance Company Ltd. (Bermuda) |
| 19. | Chaucer Insurance Company Designated Activity Company (Ireland) |
| b. | Citizens Insurance Company of Illinois (Illinois) |
| c. | CitySquare II Development Co. LLC (Massachusetts) |
| B. | VeraVest Investments, Inc. (Massachusetts) |
| C. | Verlan Holdings, Inc. (Maryland) |
| a. | Hanover Specialty Insurance Brokers, Inc. (Virginia) |
| E. | Educators Insurance Agency, Inc. (Massachusetts) |
| F. | The Hanover (Barbados) Capital SRL (Barbados) |
| G. | The Hanover Insurance International Holdings Limited (United Kingdom) |
| a. | Chaucer Holdings Limited (United Kingdom) |
| 1. | ALIT Insurance Holdings Limited (United Kingdom) |
| (i) | Aberdeen Underwriting Advisers Limited (United Kingdom) |
| (ii) | ALIT Underwriting Limited (United Kingdom) |
| 1. | ALIT (No. 1) Limited (United Kingdom) |
| 2. | ALIT (No. 2) Limited (United Kingdom) |
| 3. | ALIT (No. 3) Limited (United Kingdom) |
| 4. | ALIT (No. 4) Limited (United Kingdom) |
| 5. | ALIT (No. 5) Limited (United Kingdom) |
| 2. | Chaucer Corporate Capital (No. 2) Limited (United Kingdom) |
| 3. | Chaucer Corporate Capital (No. 3) Limited (United Kingdom) |
| 4. | Chaucer Corporate Capital Limited (United Kingdom) |
| 5. | Chaucer Insurance Group PLC (United Kingdom) |
| 6. | Chaucer Capital Investments Limited (United Kingdom) |
| (i) | CH 1997 Limited (United Kingdom) |
| 1. | Chaucer Consortium Underwriting Limited (United Kingdom) |
| 2. | Chaucer Dedicated Limited (United Kingdom) |
| 3. | Chaucer Underwriting A/S (Denmark) |
| 4. | INSURANCE4CARGOSERVICES Limited (United Kingdom) |
| (ii) | Chaucer Syndicates Limited (United Kingdom) |
| 1. | Lonham Limited (United Kingdom) |
| a. | Lonham Group Limited (United Kingdom) |
| 2. | Chaucer Labuan Limited (Malaysia) |
| 3. | Chaucer GmbH (Germany) |
| 4. | Chaucer Latin America SA (Argentina) |
| 5. | Chaucer Singapore Pte. Limited (Singapore) |
| 6. | Chaucer Syndicate Services Limited (United Kingdom) |
| 7. | Chaucer Oslo AS (Norway) |
| 8. | Chaucer Underwriting Services Limited (United Kingdom) |
| 9. | Chaucer MENA Limited (Dubai) |
| H. | The Hanover Australia HoldCo Pty Ltd (Australia) |
| a. | Hanover Australia BidCo Pty Ltd (Australia) |
| 1. | SLE Holdings Pty Ltd (Australia) |
| (ii) | SLE Worldwide Pty Limited (Australia) |