| Relationships | Role | Relationship Start | Relationship End |
| Century Bancorp, Inc. | Parent | 12/31/1982 | 11/15/1992 |
| Com & Finl Services Corp | Parent | 12/23/1976 | 7/17/1981 |
| Three Hundred Western Avenue Realty Trust | Subsidary | 9/25/1986 | 11/15/1992 |
| Decade Properties Corporation | Subsidary | 4/30/1991 | 11/15/1992 |
| Bellingham Properties Corp. | Subsidary | 7/1/1992 | 11/15/1992 |
| Acquisitions & Mergers | Role | Assets | Acct Method | Type | Transaction Date |
| Century Bank And Trust Company | Buyer | 4,287,637 | Discontinued | 11/16/1992 | |
| North End Branch | Seller | Discontinued | 11/1/1985 | ||
| Morris Plan Bank And Banking Company Of Chelsea | Seller | Failure | 12/22/1976 |