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                                                                 CONFORMED COPY
                                                                 --------------

                       SECURITIES AND EXCHANGE COMMISSION
                             450 Fifth Street, N.W.
                            Washington, D.C.  20549


                                    FORM 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                        Securities Exchange Act of 1934


         Date of Report (Date of earliest event reported): May 15, 1996


                           DISCOVER CARD TRUST 1991 C
                           --------------------------
             (Exact name of Registrant as specified in its charter)



                                                                   
Delaware                               0-19735                           Not Applicable
- --------                               -------                           --------------
(State of                              (Commission                       (IRS Employer
organization)                          File Number)                      Identification No.)



c/o Discover Receivables Financing Group, Inc.
12 Read's Way
New Castle, Delaware                                                19720
- ----------------------------------------------------------------------------
(Address of principal executive offices)                          (Zip Code)


Registrant's telephone number, including area code: (302) 323-7184



                                Not Applicable
                 ----------------------------------------------
                 (Former address, if changed since last report)



                                 Page 1 of 14
                         Index to Exhibits is on page 4





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Item 5.  Other Events

On May 15, 1996 the Registrant made available the Monthly Certificateholders'
Statement for  the Due Period of April 1996, which is attached as Exhibit 21
hereto.

Item 7.  Financial Statements and Exhibits

(c) Exhibits



Exhibit No.                                Description
- -----------                                -----------
                                       
21                                        Monthly Certificateholders' Statement for Discover Card Trust 1991 C related to the Due
                                          Period ending April 30, 1996.






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                                   SIGNATURES

         Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed
on its behalf by the undersigned, thereunto duly authorized.

                                  DISCOVER CARD TRUST 1991 C
                                         (Registrant)

                                  By:  DISCOVER RECEIVABLES FINANCING
                                       GROUP, INC.
                                       as originator of the Trust


                                  By:            Birendra Kumar
                                       ------------------------------
                                       Birendra Kumar
                                       Vice President and Treasurer


Date: May 15, 1996





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                                 EXHIBIT INDEX



Exhibit No.                                Description
- -----------                                -----------
                                        
21                                         Monthly Certificateholders' Statement for Discover Card Trust 1991 C related to the Due
                                           Period ending April 30, 1996.






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