EXHIBIT 31.1:

I, William G. Watson, President, Chief Executive Officer and Principal
Financial Officer of Texas Vanguard Oil Company, certify that:

1. I have reviewed this annual report on Form 10-KSB of Texas Vanguard Oil
Company;

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 registrants 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 registrants 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

	d) disclosed in this report any change in the registrants internal
control over financial reporting that occurred during the registrants most
recent fiscal quarter (the registrants fourth fiscal in the case of an
annual report) that has materially affected, or is reasonably likely to
materially affect, the registrants internal control over financial reporting;
and

5. The registrants other certifying officer(s) and I have disclosed, based
on our most recent evaluation of internal control over financial reporting,
to the registrants 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.


March 29, 2007


By /s/ William G. Watson
------------------------
William G. Watson, President
Chief Executive Officer and Principal Financial Officer