Mrs Susan Centlivre (1667-1723)
From 18th Century Literary Anecdotes

MRS. Centlivre dedicated The Gotham Election to Mr. Secretary Craggs, who made her a present of twenty guineas by the hands of Mrs. Bracegirdle, who had got leave for her to dedicate it to him; and when she told him he was very liberal, and sent the author more than she could reasonably expect, especially as her farce had never been acted, he told her he considered not so much the merit of the piece as what was proper to be done by a Secretary of State.

From T. Whincop, A Compleat List of all the English Dramatic Poets. (1747), p. 191.