Exhibit 1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing of MP TMA LLC, MP TMA (Cayman) LLC, MatlinPatterson Global Opportunities Partners III L.P., MatlinPatterson Global Opportunities Partners (Cayman) III L.P., MatlinPatterson Global Partners III LLC, MatlinPatterson Global Advisers LLC, MatlinPatterson Asset Management LLC, MatlinPatterson LLC, David J. Matlin and Mark R. Patterson, on behalf of each of them a statement on Schedule 13D (including amendments thereto) with respect to shares of common stock, par value $0.01 per share, of Thornburg Mortgage, Inc., a Maryland corporation, and that this Agreement be included as an Exhibit to such joint filing.  This Agreement may be executed in any number of counterparts all of which taken together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement this 9th day of April 2008.

Signatures:	MP TMA LLC By:­ /s/ Robert A. Weiss                                        Name:  Robert A. Weiss Title:
	MP TMA (CAYMAN) LLC By:­ /s/ Robert A. Weiss                                        Name:  Robert A. Weiss Title:
	MATLINPATTERSON GLOBAL OPPORTUNITIES PARTNERS III L.P. By:  MATLINPATTERSON GLOBAL ADVISERS LLC, its Investment Adviser By:­ /s/ Lawrence M. Teitelbaum                        Name:  Lawrence M. Teitelbaum Title:  Chief Financial Officer

2

MATLINPATTERSON GLOBAL OPPORTUNITIES PARTNERS (CAYMAN) III L.P.

By:  MATLINPATTERSON GLOBAL ADVISERS LLC, its Investment Adviser

By:­

/s/ Lawrence M. Teitelbaum                       

Name:  Lawrence M. Teitelbaum

Title:  Chief Financial Officer

MATLINPATTERSON GLOBAL PARTNERS III LLC

By:­

/s/ Lawrence M. Teitelbaum                       

Name:  Lawrence M. Teitelbaum

Title:  Chief Financial Officer

MATLINPATTERSON GLOBAL ADVISERS LLC

By:­

/s/ David J. Matlin                                       

Name:  David J. Matlin

Title:  Chief Executive Officer

MATLINPATTERSON ASSET MANAGEMENT LLC

By:  MATLINPATTERSON LLC, its Manager

By:­

/s/ David J. Matlin                                       

Name:  David J. Matlin

Title:  Member

MATLINPATTERSON LLC

By:­

/s/ David J. Matlin                                       

Name:  David J. Matlin

Title:  Member

DAVID J. MATLIN

By:­

/s/ David J. Matlin                                       

Name:  David J. Matlin

MARK R. PATTERSON

By:­

/s/ Mark R. Patterson                                   

Name:  Mark R. Patterson