EXHIBIT 4.30

4th AMENDMENT TO 6% SECURED
PROMISSORY NOTE

PRINCIPAL AMOUNT $960,000 DATED AUGUST
31, 2010



WHEREAS,onAugust
31, 2010 Eagleford Energy, Inc., an Ontario corporation (the “Obligor”), issued a 6% Secured Promissory Note
(the “Note”) due December 31, 2011 (the “Original Maturity Date”) in the principal amount
of $960,000 in favor of Benchmark Enterprises LLC, a Nevis limited liability corporation (the “Payee”); and



WHEREAS,onthe 31st
day of December, 2011, theObligor and the Payeeamended the terms of the Note, to extend the Original Maturity Date
by six months and to provide for the continued accrual of interest on the outstanding principal amount of the Note during such
extension at the new rate of 10% per annum such that interest is accrued at 6% during the period from August 31, 2010 through and
including December 31, 2011 and at 10% during the period from January 1, 2012 through November 30, 2012, and as such may be accelerated
under the terms of the Note.



WHEREAS,onJune 30,
2012, theObligor and the Payeeagain amended the terms of the Note, to extend the New Maturity Date by four months
and to provide for the continued accrual of interest on the outstanding principal amount of the Note during such extension at the
amended rate of 10% per annum through the New Amended Maturity Date of November 30, 2012, and as such may be accelerated under
the terms of the Note.



WHEREAS,onNovember
23, 2012, theObligor and the Payeeagain amended the terms of the Note, to extend the New Maturity Date to March
1, 2013 and to provide for the continued accrual of interest on the outstanding principal amount of the Note during such extension
at the amended rate of 10% per annum through the New Amended Maturity Date of March 1, 2013, and as such may be accelerated under
the terms of the Note.



WHEREAS theObligor and the
Payeewish toagainamend the terms of the Note, to extend the Maturity Date and to provide for the continued
accrual of interest on the outstanding principal amount of the Note during such extension at the rate of 10% per annum through
the Re Re Amended Maturity Date, as such term is defined below and as such may be accelerated under the terms as amended below.



NOW, THEREFORE,in consideration
of the mutual promises set forth herein, the Obligor and the Payeehereby agree that: For value received, the Company hereby
promises to pay to the order of the Holder, in lawful money of the United States of America and in immediately available funds
the principal sum of nine hundred and sixty thousand dollars ($960,000) and all unpaid and accrued interest on or before August
31, 2013, or within 15 days of written demand to the Company, or upon the Company closing of a cash financing or series of cash
financings closing after the date of this agreement in excess of US$2,500,000 (Two Million, Five Hundred Thousand USA dollars),
(the “Funding Threshold”) in which case fifty cents of every one dollar exceeding the Funding Threshold will be allocated
to the Note until paid in full, (the “Re Re Amended Maturity Date”) or upon an Event of Default (as defined in Section
3.01 of the Note).



All other terms and conditions of the Note
remain unchanged.











IN WITNESS WHEREOF, this Amendment
has been duly executed by the Obligor and acknowledged by the Payee as of the 1st day of March, 2013.



| | EAGLEFORD ENERGY, INC.   
| | -------------------------
| |                          
| | By:                      
| | Name:                    
| |                          
| |                          
| | BENCHMARK ENTERPRISES LLC
| |                          
| | By:                      
| | Name:                    
| | Title: