UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------

                                 SCHEDULE 13G/A

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 1)*

                          Houston American Energy Corp.
                                (Name of Issuer)

                         Common Stock, $0.001 par value
                         (Title of Class of Securities)

                                    44183u100
                                 (CUSIP Number)

                                December 31, 2007
             (Date of Event Which Requires Filing of this statement)


     Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
     [ ]  Rule 13d-1(b)
     [X]  Rule 13d-1(c)
     [ ]  Rule 13d-1(d)





----------------
     *The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter the disclosures provided in a prior cover page.

     The information required in the remainder of this cover page shall not be
deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act
of 1934 ("Act") or otherwise subject to the liabilities of that section of the
Act but shall be subject to all other provisions of the Act (however, see the
Notes).



                                Page 1 of 8 Pages






CUSIP No. 44183u100                   13G/A                  Page 2 of 8 Pages


--------------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

            GLG Partners LP
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
                                                               (a)  [X]
                                                               (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY
--------------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION
            United Kingdom
--------------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                    0
OWNED BY       -----------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      -----------------------------------------------------------------

PERSON WITH:  (8)   SHARED DISPOSITIVE POWER
                    0
--------------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                    0
--------------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
                                                                           [ ]
--------------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
            0.0%
--------------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
            PN
--------------------------------------------------------------------------------





CUSIP No. 44183u100                   13G/A                  Page 3 of 8 Pages


--------------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

            GLG Partners Limited
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
                                                               (a)  [X]
                                                               (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY
--------------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION

            United Kingdom
--------------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                    0
OWNED BY       -----------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      -----------------------------------------------------------------

PERSON WITH:   (8)  SHARED DISPOSITIVE POWER
                    0
--------------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
            0
--------------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
                                                                           [ ]
--------------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
            0.0%
--------------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
            IA, HC
--------------------------------------------------------------------------------





CUSIP No. 44183u100                   13G/A                  Page 4 of 8 Pages


--------------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

            GLG Partners, Inc.
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
                                                               (a)  [X]
                                                               (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY
--------------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION

            Delaware
--------------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (6)  SHARED VOTING POWER
                    0
OWNED BY       -----------------------------------------------------------------

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      -----------------------------------------------------------------

PERSON WITH:   (8)  SHARED DISPOSITIVE POWER
                    0
--------------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
            0
--------------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
                                                                           [ ]
--------------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
             0.0%
--------------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
            CO
--------------------------------------------------------------------------------






CUSIP No. 44183u100                   13G/A                  Page 5 of 8 Pages


This Amendment No. 1 (this "Amendment") amends the statement on Schedule 13G
filed on August 3, 2007 (as amended, the "Schedule 13G") with respect to shares
of Common Stock, par value $0.001 per share (the "Shares") of Houston American
Energy Corp., a Delaware corporation (the "Company"). Capitalized terms used
herein and not otherwise defined in this Amendment have the meanings set forth
in the Schedule 13G. This Amendment amends and restates Items 2(a), 2(b), 2(c),
4, 5 and 10 in their entirety as set forth below.

Item 2(a).     Name of Person Filing

          This statement is filed by the entities and persons listed below, who
          are collectively referred to herein as "Reporting Persons," with
          respect to the Shares:

          INVESTMENT MANAGER

          (i)  GLG Partners LP (the "Investment Manager"), with respect to the
               Shares held by certain funds to which the Investment Manager
               serves as investment manager (the "GLG Funds").

          GENERAL PARTNER

          (ii) GLG Partners Limited (the "General Partner"), which serves as the
               general partner of the Investment Manager, with respect to the
               Shares held by each of the GLG Funds.

          PARENT COMPANY

          (iii) GLG Partners, Inc. (the "Parent Company"), which indirectly
               wholly owns the General Partner, with respect to the Shares held
               by each of the GLG Funds.

          The Investment Manager serves as the investment manager to each of the
          GLG Funds. The General Partner serves as the general partner to the
          Investment Manager. The Parent Company indirectly wholly owns the
          General Partner.

          On November 2, 2007, the General Partner, the Investment Manager and
          certain additional entities were directly or indirectly acquired by
          the Parent Company (formerly named Freedom Acquisition Holdings,
          Inc.). The Parent Company is publicly listed on the New York Stock
          Exchange under the ticker symbol GLG.

Item 2(b).     Address of Principal Business Office or, if none, Residence

          The address of the principal business office of the Parent Company is:

          390 Park Avenue, 20th Floor
          New York, New York 10022

          The address of the principal business office of each of the other
          Reporting Persons is:

          c/o GLG Partners LP
          1 Curzon Street
          London W1J 5HB
          United Kingdom

Item 2(c).     Citizenship






CUSIP No. 44183u100                   13G/A                  Page 6 of 8 Pages


          Citizenship is set forth in Row 4 of the cover page for each Reporting
          Person hereto and is incorporated herein by reference for each such
          Reporting Person.

Item 4.   Ownership

          Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.

          The information required by Items 4(a) - (c) is set forth in Rows 5 -
          11 of the cover page for each Reporting Person hereto and is
          incorporated herein by reference for each such Reporting Person. Based
          upon the Company's Quarterly Report filed on Form 10-Q for the
          quarterly period ended September 30, 2007, the Company had 27,920,172
          Shares outstanding as of October 15, 2007.

          The Investment Manager, which serves as the investment manager to each
          of the GLG Funds, may be deemed to be the beneficial owner of all
          Shares owned by the GLG Funds. The Investment Manager exercises its
          investment authority directly or indirectly through various entities,
          including, without limitation, GLG Inc. The General Partner, as
          general partner to the Investment Manager, may be deemed to be the
          beneficial owner of all Shares owned by the GLG Funds. Each of
          Emmanuel Roman, Pierre Lagrange and Noam Gottesman are Managing
          Directors of the General Partner. The Parent Company, which indirectly
          wholly owns the General Partner, may be deemed to be the beneficial
          owner of all Shares owned by the GLG Funds. Each of the Investment
          Manager, the General Partner, the Parent Company, GLG Inc., Emmanuel
          Roman, Pierre Lagrange and Noam Gottesman hereby disclaims any
          beneficial ownership of any such Shares, except for their pecuniary
          interest therein.

Item 5.        Ownership of Five Percent or Less of a Class

          If this statement is being filed to report the fact that as of the
date hereof the reporting person has ceased to be the beneficial owner of more
than five percent of the class of securities, check the following: [X]

Item 10.       Certification

          By signing below each of the undersigned certifies that, to the best
of its knowledge and belief, the securities referred to above were not acquired
and are not held for the purpose of or with the effect of changing or
influencing the control of the issuer of the securities and were not acquired
and are not held in connection with or as a participant in any transaction
having that purpose or effect.

Exhibits:

Exhibit I: Joint Filing Agreement, dated as of February 14, 2008, by and among
GLG Partners, Inc., GLG Partners LP and GLG Partners Limited.






CUSIP No. 44183u100                   13G/A                  Page 7 of 8 Pages


                                   SIGNATURES

          After reasonable inquiry and to the best of its knowledge and belief,
each of the undersigned certifies that the information with respect to it set
forth in this statement is true, complete, and correct.

Dated: February 14, 2008


GLG PARTNERS LP
    Individually and in its capacity as Investment Manager

GLG PARTNERS LIMITED
    Individually and in its capacity as General Partner of GLG Partners LP

    By: /s/ Timothy Kuschill
        -----------------------------------
        Timothy Kuschill
        Counsel of GLG Partners LP

    By: /s/ Victoria Parry
        -----------------------------------
        Victoria Parry, Attorney-in-Fact
        On behalf of Emmanuel Roman, Managing Director, GLG Partners Limited



GLG PARTNERS, INC.

    By: /s/ Alejandro R. San Miguel
        -----------------------------------
        Name: Alejandro R. San Miguel
        Title: General Counsel and Corporate Secretary

The Power of Attorney, dated January 14, 2008, executed by Emmanuel Roman,
authorizing Victoria Parry to sign and file this Schedule 13G/A on Emmanuel
Roman's behalf, which was filed with the Schedule 13G/A filed with the
Securities and Exchange Commission on February 14, 2008 by such Reporting
Persons with respect to the common stock of American Oil & Gas, Inc., is hereby
incorporated by reference.






CUSIP No. 44183u100                   13G/A                  Page 8 of 8 Pages


                                    EXHIBIT I

                             JOINT FILING AGREEMENT


This will confirm the agreement by and among the undersigned that the Schedule
13G filed with the Securities and Exchange Commission on or about the date
hereof with respect to the beneficial ownership by the undersigned of the Shares
is being filed, and all amendments thereto will be filed, on behalf of each of
the persons and entities named below in accordance with Rule 13d-1(k) under the
Securities Exchange Act of 1934, as amended. This Agreement may be executed in
two or more counterparts, each of which shall be deemed an original, but all of
which together shall constitute one and the same instrument.

Dated as of February 14, 2008



GLG PARTNERS LP
    Individually and in its capacity as Investment Manager

GLG PARTNERS LIMITED
    Individually and in its capacity as General Partner of GLG Partners LP

    By: /s/ Timothy Kuschill
        ------------------------------------
        Timothy Kuschill
        Counsel of GLG Partners LP

    By: /s/ Victoria Parry
        ------------------------------------
        Victoria Parry, Attorney-in-Fact
        On behalf of Emmanuel Roman, Managing Director, GLG Partners Limited



GLG PARTNERS, INC.

    By: /s/ Alejandro R. San Miguel
        ------------------------------------
        Name: Alejandro R. San Miguel
        Title: General Counsel and Corporate Secretary