**Exhibit 31.1**

**CERTIFICATION        PURSUANT TO SECTION 302**

**OF        THE SARBANES-OXLEY ACT OF 2002**

|   | (a)       | designed                  such disclosure controls and procedures, or caused such disclosure                  controls and procedures to be designed under our supervision, to                  ensure                  that material information relating to the registrant, including                  its                  consolidated subsidiaries, is made known to us by others within                  those                  entities, particularly during the period in which this report is                  being                  prepared; |
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|   |  (b) |  designed                such internal control over financial reporting, or caused such internal                control over financial reporting to be designed under our supervision,                to                provide reasonable assurance regarding the reliability of financial                reporting and the preparation of financial statements for external                purposes in accordance with generally accepted accounting                principles;                                                                   |
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|   | (c)       | evaluated                  the effectiveness of the registrant’s disclosure controls and procedures                  and presented in this report our conclusions about the effectiveness                  of                  the disclosure controls and procedures, as of the end of the period                  covered by this report based on such evaluation; and                                                                                                                                                                           |
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|   | (d)       | disclosed                  in this report any change in the registrant’s internal control over                  financial reporting that occurred during the registrant’s most recent                  fiscal quarter (the registrant’s fourth fiscal quarter in the case of an                  annual report) that has materially affected, or is reasonably likely                  to                  materially affect, the registrant’s internal control over financial                  reporting; and                   |

|   | (a)    | All                  significant deficiencies and material weaknesses in the design                  or                  operation of internal control over financial reporting which are                  reasonably likely to adversely affect the registrant’s ability to record,                  process, summarize and report financial information;                  and |
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|   | (b)    | Any                  fraud, whether or not material, that involves management or other                  employees who have a significant role in the registrant’s internal control                  over financial reporting.                                                                                                                                                   |

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| August 13,                2007 | By:    | /s/ Cary              D. Brown                                                                                                                             |   |
|                                |   | Cary              D. Brown                                                                                                                                      |   |
|                                |   | Chief Executive                Officer and Chairman of the Board of Legacy Reserves GP, LLC, general partner of Legacy Reserves LP(Principle Executive Officer) |   |
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