Western Asset Municipal Partners Fund II Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

95766V105

(CUSIP Number)

December 31, 2006

(Date of Event Which Requires Filing of this Statement)

£

Rule 13d-1(b)

£

Rule 13d-1(c)

T

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.

   1.

Names of Reporting Persons.

I.R.S. Identification Nos. of above persons (entities only).

Peter Wilby

   2.

Check the Appropriate Box if a Member of a Group (See Instructions)

 (a)

 (b)

  3.

SEC Use Only

  4.

Citizenship or Place of Organization

United States

Number of

Shares

Beneficially

Owned by

Each

Reporting

Person

With:

5.    Sole Voting Power: 316,737.64

6.    Shared Voting Power: 0

7.    Sole Dispositive Power: 316,737.64

 8.    Shared Dispositive Power: 0

  9.

Aggregate Amount Beneficially Owned by Each Reporting Person.

316,737.64

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)

11.

Percent of Class Represented by Amount in Row (9)

5.3%

12.

Type of Reporting Person (See Instructions)

IN

Item 1.

(a)

Name of Issuer

Western Asset Municipal Partners Fund II Inc. (“Issuer”)

(b)

Address of Issuer’s Principal Executive Offices

385 East Colorado Boulevard

Pasadena, California 91101

Item 2.

(a)

Name of Person Filing

Peter Wilby

(b)

Address of Principal Business Office or, if none, Residence

31 West 52^nd Street, 16^th Floor

New York, NY 10019

(c)

Citizenship

United States

(d)

Title of Class of Securities

Common Stock, par value $.001 per share (“Common Stock”)

(e)

CUSIP Number

95766V105

Item 3.

If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a)

£

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b)

£

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c)

£

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d)

£

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8).

(e)

£

An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);

(f)

£

An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);

(g)

£

A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);

(h)

£

A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

£

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

£

Group, in accordance with §240.13d-1(b)(1)(ii)(J).

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.

(a)

Amount beneficially owned:

316,737.64 shares of Common Stock

(b)

Percent of class:

5.3%

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or to direct the vote: 316,737.64

(ii)

Shared power to vote or to direct the vote:  none

(iii)

Sole power to dispose or to direct the disposition of: 316,737.64.

(iv)

Shared power to dispose or to direct the disposition of: none

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 £ .

Item 6.

Ownership of More than Five Percent on Behalf of Another Person.

Not applicable.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person.

Not applicable

Item 8.

Identification and Classification of Members of the Group

Not applicable.

Item 9.

Notice of Dissolution of Group

Not applicable.

Item 10.

Certification

Not applicable.

February 9, 2007

Date

              /s/ Peter Wilby

Signature

Peter Wilby

Name/Title