Ownership Submission
FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Blackstone Holdings III L.P.
2. Date of Event Requiring Statement (Month/Day/Year)
05/01/2013
3. Issuer Name and Ticker or Trading Symbol
Ellington Residential Mortgage REIT [EARN]
(Last)
(First)
(Middle)
C/O THE BLACKSTONE GROUP L.P., 345 PARK AVENUE
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NEW YORK, NY 10154
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Shares 2,555,599
I
See Footnotes (1) (2) (3) (4)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Blackstone Holdings III L.P.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
Blackstone Tactical Opportunities EARN Holdings L.L.C.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
BTO EARN Manager L.L.C.
C/O THE BLACKSTONE GROUP L.P
345 PARK AVENUE
NEW YORK, NY 10154
    X    
BTOA L.L.C.
C/O THE BLACKSTONE GROUP L.P
345 PARK AVENUE
NEW YORK, NY 10154
    X    
Blackstone Holdings III GP L.P.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
Blackstone Holdings III GP Management L.L.C.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
Blackstone Group L.P.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
Blackstone Group Management L.L.C.
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    
SCHWARZMAN STEPHEN A
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE
NEW YORK, NY 10154
    X    

Signatures

BLACKSTONE TACTICAL OPPORTUNITIES EARN HOLDINGS L.L.C.; By: BTO EARN Manager L.L.C., its managing member; By: BTOA L.L.C., its sole member; By: /s/ John G. Finley; Title: Chief Legal Officer 05/01/2013
**Signature of Reporting Person Date

BTO EARN MANAGER L.L.C.; By: BTOA L.L.C., its sole member; By: /s/ John G. Finley; Title: Chief Legal Officer 05/01/2013
**Signature of Reporting Person Date

BTOA L.L.C.; By: /s/ John G. Finley; Title: Chief Legal Officer 05/01/2013
**Signature of Reporting Person Date

BLACKSTONE HOLDINGS III L.P.; By: Blackstone Holdings III GP L.P., its general partner; By: Blackstone Holdings III GP Management L.L.C., its general partner; By: /s/ John G. Finley; Title: Chief Legal Officer 05/01/2013
**Signature of Reporting Person Date

BLACKSTONE HOLDINGS III GP L.P.; By: Blackstone Holdings III GP Management L.L.C., its general partner; By: /s/ John G. Finley; Title: Chief Legal Officer 05/01/2013
**Signature of Reporting Person Date

BLACKSTONE HOLDINGS III GP MANAGEMENT L.L.C.; By: /s/ John G. Finley; Title: Chief Legal Officer 05/01/2013
**Signature of Reporting Person Date

THE BLACKSTONE GROUP L.P.; By: Blackstone Group Management L.L.C., its general partner; By: /s/ John G. Finley; Title: Chief Legal Officer 05/01/2013
**Signature of Reporting Person Date

BLACKSTONE GROUP MANAGEMENT L.L.C.; By: /s/ John G. Finley; Title: Chief Legal Officer 05/01/2013
**Signature of Reporting Person Date

STEPHEN A SCHWARZMAN, /s/ Stephen A. Schwarzman 05/01/2013
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) These shares represent common shares of beneficial interest, $0.01 par value per share ("Common Shares") of Ellington Residential Mortgage REIT (the "Issuer") that are directly held by Blackstone Tactical Opportunities EARN Holdings L.L.C. ("EARN Holdings").
(2) BTO EARN Manager L.L.C. is the managing member of EARN Holdings. BTOA L.L.C. is the sole member of BTO EARN Manager L.L.C. Blackstone Holdings III L.P. is the managing member of BTOA L.L.C. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P.
(3) The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman. As a result of his control of Blackstone Group Management L.L.C., Mr. Schwarzman may be deemed to have voting and investment power with respect to the Common Shares held by EARN Holdings.
(4) Each of such Blackstone entities and Mr. Schwarzman may be deemed to beneficially own the shares beneficially owned by EARN Holdings directly or indirectly controlled by it or him, but each (other than EARN Holdings to the extent of its direct holdings) disclaims beneficial ownership of such shares, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.

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