Western Asset Mortgage Defined Opportunity Fund Inc. (“DMO”) Announces Distributions for the Months of December 2012,

  Western Asset Mortgage Defined Opportunity Fund Inc. (“DMO”) Announces
  Distributions for the Months of December 2012, January and February 2013

Business Wire

NEW YORK -- November 13, 2012

Western Asset Mortgage Defined Opportunity Fund Inc. (NYSE: DMO) announced
today monthly distributions of $0.1500 per common share for December 2012,
January and February 2013.

The distribution schedule appears below:

Month     Ex-Date     Record Date  Payable Date  Amount   Type
December  12/12/2012  12/14/2012   12/21/2012    $0.1500  Income
January    01/16/2013   01/18/2013    01/25/2013     $0.1500   Income
February   02/13/2013   02/15/2013    02/22/2013     $0.1500   Income

This press release is not for tax reporting purposes but is being provided to
announce the amount of the Fund’s distributions that have been declared by the
Board of Directors. In early 2013 and early 2014, after definitive information
is available, the Fund will send shareholders a Form 1099-DIV, if applicable,
specifying how the distributions paid by the Fund during the prior calendar
year should be characterized for purposes of reporting the distributions on a
shareholder’s tax return (e.g., ordinary income, long-term capital gain or
return of capital).

Western Asset Mortgage Defined Opportunity Fund Inc., a non-diversified,
limited-term, closed-end management investment company, is managed by Legg
Mason Partners Fund Advisor, LLC, a wholly-owned subsidiary of Legg Mason,
Inc., and is sub-advised by Western Asset Management Company, an affiliate of
the investment manager.

Contact the Fund at 1-888-777-0102 for additional information, or consult the
Fund’s web site at www.lmcef.com.

Data and commentary provided in this press release are for informational
purposes only. Legg Mason and its affiliates do not engage in selling shares
of the Fund.

Contact:

Western Asset Mortgage Defined Opportunity Fund Inc.
Maria Rosati, 212-805-6036
mrosati@leggmason.com
 
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