Exhibit  31.1

  RFMC WILLOWBRIDGE FUND, L.P.  Rule 13a-14(a)/13d-14(a) Certifications

 I,  Robert L. Lerner, certify that:
| 1) 
I have reviewed this report      on Form 10-K of RFMC Willowbridge Fund, L.P.
 
 
 
2) 
Based on my knowledge, this      report does not contain any untrue statement of a material fact or omit to      state a material fact necessary to make the statements made, in light of      the circumstances under which such statements were made, not misleading      with respect to the period covered by this report;
 
 
 
3) 
Based on my knowledge, the      financial statements, and other financial information included in this      report, fairly present in all material respects the financial condition,      results of operations and cash flows of the registrant as of, and for, the      periods presented in this report;
 
 
 
4) 
I am responsible for      establishing and maintaining disclosure controls and procedures (as      defined in Exchange Act Rules 13a-14 and 15d-14) and internal control over      financial reporting (as defined in Exchange Act Rules 13a-15(f) and      15d015(f)) for the registrant and I have:
 
 
 
 
a) 
designed such disclosure      controls and procedures, or caused such disclosure controls and procedures      to be designed under my supervision, to ensure that material information      relating to the registrant, including its consolidated subsidiaries, is      made known to me by others within those entities, particularly during the      period in which this report is being prepared;
 
 
 
 
b) 
designed such internal      control over financial reporting, or caused such internal control over      financial reporting to be designed under my 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;
 
 
 
 
c) 
evaluated the effectiveness      of the registrant's disclosure controls and procedures and presented in      this report my 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
 
 
 
 
d) 
disclosed in this report      any change in the registrant's internal control over financial reporting      that occurred during the registrant's fourth fiscal quarter that has      materially affected, or is reasonably likely to materially affect, the      registrant's internal control over financial reporting; and
 
 
 
5) 
I have disclosed, based on      my most recent evaluation, to the registrant's auditors and the audit      committee of registrant's board of directors (or persons performing the      equivalent function);
 
 
 
 
a) 
All 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 
 
 
 
 
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.
 
 
 
 

By:  /s/ Robert L. Lerner                                               Robert L. Lerner, President, Principal  Executive Officer and Principal Financial Officer of  Ruvane Fund Management Corporation

 

Date:  September 17, 2008 

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