POWER OF ATTORNEY
      The undersigned hereby constitutes and appoints each of Roya Shakoori and
William Munger, signing singly, as the undersigned's true and lawful
attorney-in-fact to:
      (1)	execute for and on behalf of the undersigned, in the undersigned's
capacity as a director of Mangomill PLC, to be renamed MariaDB PLC (the
"Company"), Forms 3, 4 and 5 in accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the rules thereunder (the "Exchange Act") and Form ID,
and or Passphrase Update to obtain EDGAR codes and related documentation for use
  in filing Forms 3, 4 and 5;
      (2)	do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete and execute any such Form 3, 4
or 5, Form ID, or Passphrase Update, complete and execute any amendment or
amendments thereto, and timely file such forms with the United States Securities
  and Exchange Commission and any stock exchange or similar authority;
      (3)	take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of benefit to,
in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of the
  undersigned pursuant to this Power of Attorney shall be in such form and shall
  contain such terms and conditions as such attorney-in-fact may approve in such
  attorney-in-fact's discretion; and
      (4)	seek or obtain, as the undersigned's attorney-in-fact and on the
undersigned's behalf, information regarding transactions in the Company's
securities from any third party, including brokers, and the undersigned hereby
authorizes any such person to release any such information to such
attorney-in-fact and approves and ratifies any such release of information.
      The undersigned hereby grants to each such attorney-in-fact full power and
  authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in connection with the exercise of any of the
rights and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this Power of Attorney and the
rights and powers herein granted.  The undersigned acknowledges that the
foregoing attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Exchange Act.
      This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.
      This Power of Attorney does not relieve the undersigned from
responsibility for compliance with the undersigned's obligations under the
Exchange Act, including, without limitation, the reporting requirements under
Section 16 of the Exchange Act.  Additionally, although pursuant to this Power
of Attorney the Company will use commercially reasonable best efforts to timely
and accurately file Section 16 reports on behalf of the undersigned, the Company
  does not represent or warrant that it will be able to in all cases timely and
accurately file Section 16 reports on behalf of the undersigned due to various
factors, including, but not limited to, the shorter deadlines mandated by the
Sarbanes-Oxley Act of 2002, possible time zone differences between the Company
and the undersigned and the Company's need to rely on others for information,
including the undersigned and brokers of the undersigned.
      IN WITNESS WHEREOF, the undersigned had caused this Power of Attorney to
be executed as of this 24th day of May, 2023
By: 		/s/ Paul Augustine O'Brien
	Paul Augustine O'Brien





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