Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the use in the Amendment No. 10 to the Registration Statement on Form F-1 of Lannister Mining Corp. of our report dated January 28, 2026, relating to the consolidated financial statements as of and for the year ended September 30, 2025, which is part of this Registration Statement.

We also consent to the reference to us under the caption “Experts” in the aforementioned Registration Statement.

/s/ DAVIDSON & COMPANY LLP

May 21, 2026