Elizabeth Sheridan
Horace Walpole to the Countess of Ossory, 27 March 1773; Letters, ed. Cunningham (1906) 5:453.
I was to have gone to the Oratorio last night for Miss Linley's sake, but, being engaged to the French Ambassador's ball afterwards, I thought I was not quite Hercules enough for so many labours, and declined the former.