EXHIBIT 4.1

            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

     We consent to the reference to our firm under the caption
"Experts-Independent Registered Public Accounting Firm" and to the use of our
report dated January 31, 2019 in the Amendment No. 1 to the Registration
Statement (File No. 333-227992) and related Prospectus of Guggenheim Defined
Portfolios, Series 1841.

                                                          /s/ Grant Thornton LLP
                                                          ----------------------
                                                              GRANT THORNTON LLP


Chicago, Illinois
January 31, 2019