E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Negro’ni.
A princess, a friend of Lucrezia di Bor’gia, Duchess of Ferra’ra. She invited to a banquet the nobles who had insulted her friend, and killed them with poisoned wine. (Donizetti: Lucrezia di Borgia, an opera.)
