<page>
						            	   EXHIBIT 31.01
CERTIFICATIONS

I, Walter Davis, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of Morgan Stanley
Cornerstone Fund IV 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.	The registrant?s other certifying officer(s) and I are responsible
for establishing and maintaining disclosure controls and procedures
(as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and
internal control over financial reporting (as defined in Exchange
Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

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;

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;

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






<page>
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

5.	The registrant?s other certifying officer(s) and I have
disclosed, based on our most recent evaluation of internal
control over financial reporting, to the registrant?s auditors
and the audit committee of the registrant?s board of directors
(or persons performing the equivalent functions):

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

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.






Date: August 14, 2008    By:/s/ Walter Davis
                                Walter Davis
                                President,
                                Demeter Management Corporation,
                                general partner of the registrant