EXHIBIT 21.1


SUBSIDIARIES
OF
ST. MARY LAND & EXPLORATION COMPANY


A.
Wholly-owned subsidiaries of St. Mary Land & Exploration Company, a Delaware corporation:

1.   Four Winds Marketing, LLC, a Colorado limited liability company
2.  
SMT Texas LLC, a Colorado limited liability company
3.  
Energy Leasing, Inc., an Oklahoma corporation
4.  
Belring GP LLC, a Delaware limited liability company
5.  
St. Mary Energy Louisiana LLC, a Delaware limited liability company
6.  
St. Mary Land & Exploration Acquisition, LLC, a Delaware limited liability company

B.           Other subsidiaries of St. Mary Land & Exploration Company:

1.  
Box Church Gas Gathering, LLC, a Colorado limited liability company (58.6754%)
2.  
Hilltop Investments, a Colorado general partnership (50%)
3.  
Parish Ventures, a Colorado general partnership (100%)
4.  
Belring Company Ltd., a Texas limited partnership (99%) (the remaining 1% interest is held by Belring GP LLC)

C.
Partnership or limited liability company interests held by St. Mary Land & Exploration Company:

1.  
Trinity River Services LLC, a Texas limited liability company (25%)
2.  
1977 H.B Joint Account, a Colorado general partnership (11%)

D.           Partnership interests held by SMT Texas LLC:
 
1.  
St. Mary East Texas LP, a Texas limited partnership (99%) (the remaining 1% interest is held by St. Mary Land & Exploration Company)