1
                                                                    EXHIBIT 5.2


                    [Letterhead of Richards, Layton & Finger]

                                  April 4, 1997



Peoples Heritage Capital Trust I
c/o Peoples Heritage Financial Group, Inc.
One Portland Square
Portland, Maine 04112

      Re:  Peoples Heritage Capital Trust I

Ladies and Gentlemen:

      We have acted as special Delaware counsel for Peoples Heritage Financial
Group, Inc., a Maine corporation (the "Company"), and Peoples Heritage Capital
Trust I, a Delaware business trust (the "Trust"), in connection with the matters
set forth herein. At your request, this opinion is being furnished to you.

      For purposes of giving the opinions hereinafter set forth, our examination
of documents has been limited to the examination of originals or copies of the
following:

      (a) The Certificate of Trust of the Trust, dated as of January 24, 1997
(the "Certificate"), as filed in the office of the Secretary of State of the
State of Delaware (the "Secretary of State") on January 27, 1997;

      (b) The Declaration of Trust of the Trust, dated as of January 24, 1997,
between the Company and the trustee of the Trust named therein;

      (c) The Amended and Restated Declaration of Trust of the Trust, dated as
of January 31, 1997, including Annex I and Exhibits A-1 and A-2 thereto (the
"Declaration"), among the Company, as Sponsor, the trustees of the Trust named
therein, and the holders, from time to time, of undivided beneficial interests
in the assets of the Trust;

      (d) The Registration Statement on Form S-4 (the "Original Registration
Statement"), including a preliminary prospectus (the "Prospectus"), relating to
the 9.06% Capital Securities of the Trust representing undivided beneficial
interests in the assets of the Trust (each, a "Capital Security" and
collectively, the "Capital Securities"), as filed by the Company and the Trust
with the Securities and Exchange Commission on March 26, 1997, as amended by
Amendment No. 1 to the Original Registration Statement, as proposed to be filed
by the Company and the Trust with the Securities and Exchange Commission on or
about April 4, 1997 (as so amended, the "Registration Statement"); and

      (e) A Certificate of Good Standing for the Trust, dated April 4, 1997,
obtained from the Secretary of State;
   2
Peoples Heritage Capital Trust I
April 4, 1997
Page 2


      Initially capitalized terms used herein and not otherwise defined are used
as defined in the Declaration.

      For purposes of this opinion, we have not reviewed any documents other
than the documents listed in paragraphs (a) through (e) above. In particular, we
have not reviewed any document (other than the documents listed in paragraphs
(a) through (e) above) that is referred to in or incorporated by reference into
the documents reviewed by us. We have assumed that there exists no provision in
any document that we have not reviewed that is inconsistent with the opinions
stated herein. We have conducted no independent factual investigation of our own
but rather have relied solely upon the foregoing documents, the statements and
information set forth therein and the additional matters recited or assumed
herein, all of which we have assumed to be true, complete and accurate in all
material respects.

      With respect to all documents examined by us, we have assumed (i) the
authenticity of all documents submitted to us as authentic originals, (ii) the
conformity with the originals of all documents submitted to us as copies or
forms, and (iii) the genuineness of all signatures.

      For purposes of this opinion, we have assumed (i) that the Declaration
constitutes the entire agreement among the parties thereto with respect to the
subject matter thereof, including with respect to the creation, operation and
termination of the Trust, and that the Declaration and the Certificate are in
full force and effect and have not been amended, (ii) except to the extent
provided in paragraph 1 below, the due creation or due organization or due
formation, as the case may be, and valid existence in good standing of each
party to the documents examined by us under the laws of the jurisdiction
governing its creation, organization or formation, (iii) the legal capacity of
natural persons who are parties to the documents examined by us, (iv) that each
of the parties to the documents examined by us has the power and authority to
execute and deliver, and to perform its obligations under, such documents, (v)
the due authorization, execution and delivery by all parties thereto of all
documents examined by us, (vi) the receipt by each Person to whom a Capital
Security is to be issued by the Trust (collectively, the "Capital Security
Holders") of a certificate (substantially in the form attached as Exhibit A-1 to
the Declaration) evidencing the Capital Security and the payment for the Capital
Security acquired by it, in accordance with the Declaration and the Registration
Statement, and (vii) that the Capital Securities are issued and sold to the
Capital Security Holders in accordance with the Declaration and the Registration
Statement. We have not participated in the preparation of the Registration
Statement and assume no responsibility for its contents.

      This opinion is limited to the laws of the State of Delaware (excluding
the securities laws of the State of Delaware), and we have not considered and
express no opinion on the laws of any other jurisdiction, including federal laws
and rules and regulations relating
   3
Peoples Heritage Capital Trust I
April 4, 1997
Page 3


thereto. Our opinions are rendered only with respect to Delaware laws and rules,
regulations and orders thereunder that are currently in effect.

      Based upon the foregoing, and upon our examination of such questions of
law and statutes of the State of Delaware as we have considered necessary or
appropriate, and subject to the assumptions, qualifications, limitations and
exceptions set forth herein, we are of the opinion that:

      1. The Trust has been duly created and is validly existing in good
standing as a business trust under the Business Trust Act.

      2. The Capital Securities will represent valid and, subject to the
qualifications set forth in paragraph 3 below, fully paid and nonassessable
undivided beneficial interests in the assets of the Trust.

      3. The Capital Security Holders, as beneficial owners of the Trust, will
be entitled to the same limitation of personal liability extended to
stockholders of private corporations for profit organized under the General
Corporation Law of the State of Delaware. We note that the Capital Security
Holders may be obligated to make payments as set forth in the Declaration.

      We consent to the filing of this opinion with the Securities and Exchange
Commission as an exhibit to the Registration Statement. In addition, we hereby
consent to the use of our name under the heading "Validity of New Securities" in
the Prospectus. In giving the foregoing consents, we do not thereby admit that
we come within the category of Persons whose consent is required under Section 7
of the Securities Act of 1933, as amended, or the rules and regulations of the
Securities and Exchange Commission thereunder. Except as stated above, without
our prior written consent, this opinion may not be furnished or quoted to, or
relied upon by, any other Person for any purpose.

                                Very truly yours,

                                /s/ Richards, Layton & Finger