**Exhibit 21.1**

 

SUBSIDIARIESOF UNIONBANCAL CORPORATION*

ASOF DECEMBER 31, 2005

 

 
| **Name of Subsidiary**                  | ** ** | **State or Country in Which  Organized** |
|-----------------------------------------|------------|------------------------------------------|
| Armstrong/Robitaille, Inc.  (1)         |       | California                               |
| Bankers Commercial  Corporation         |       | California                               |
| Business Capital Trust I                |       | California                               |
| California First Advisory  Services     |       | California                               |
| California First Capital  Management    |       | California                               |
| California First  Corporation           |       | California                               |
| Cal First Properties, Inc.              |       | California                               |
| HighMark Capital  Management, Inc.      |       | California                               |
| John Burnham & Company  (1)         |       | California                               |
| MCB Statutory Trust I                   |       | California                               |
| Mills-Ralston, Inc.                     |       | California                               |
| SBS Realty Inc.                         |       | California                               |
| Stanco Properties, Inc.                 |       | California                               |
| Tanner Insurance Brokers,  Inc. (1)     |       | Minnesota                                |
| The California-Sansome  Corporation     |       | California                               |
| UBOC-1, L.P.                            |       | California                               |
| UBOC Community Development  Corporation |       | California                               |
| UBOC Commercial, LLC                    |       | California                               |

 

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| **Name of Subsidiary**                      | ** ** | **State or Country in Which  Organized** |
|---------------------------------------------|------------|------------------------------------------|
| UBOC Comstock I                             |       | California                               |
| UBOC Foundation  (Charitable Trust)         |       | California                               |
| UBOC Foundation  (Non-Profit Corporation)   |       | California                               |
| UBOC Insurance, Inc.                        |       | California                               |
| UNBC Leasing, Inc.                          |       | California                               |
| UnionBanc Investment  Services LLC          |       | Delaware                                 |
| UnionBanCal Commercial  Funding Corporation |       | California                               |
| UnionBanCal Equities, Inc.                  |       | California                               |
| UnionBanCal Leasing  Corporation            |       | California                               |
| UnionBanCal Mortgage  Corporation           |       | California                               |
| UnionBanCal Venture  Corporation            |       | California                               |
| Union Bank of California,  N.A.             |       | United States                            |
| Union Bank of California  International     |       | United States                            |
| Union Bank of California  Leasing, Inc.     |       | Delaware                                 |
| Union Capital Advisors,  Inc.               |       | California                               |

 

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*All of the subsidiaries in the above listare wholly-owned, either directly or indirectly, by UnionBanCal Corporation.

 

(1) Subsequent to December 31, 2005,Armstrong/Robitaille, Inc., John Burnham & Company, and Tanner InsuranceBrokers, Inc. were consolidated under the name UnionBanc Insurance Services,Inc., a California corporation.

 

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