Sir Barry Denny, 2nd Baronet (died 20 October 1794) was an Anglo-Irish politician, chiefly remembered for his death in a duel at the hands of John Gustavus Crosbie.
One of the candidates, John Gustavus Crosbie, took offence at one of Denny's remarks which he took to be a breach of his position of neutrality, and challenged him to a duel.
The killing resulted in a bitter feud between the two families, and John Crosbie's sudden death in 1797 led to a local tradition that he had been poisoned by the Dennys in revenge.
[3] His widow remarried General Sir John Floyd, 1st Baronet, who died in 1818.
They had no children, but she was fond of her stepdaughter Julia, and helped to arrange her marriage, which turned out very happily, to Sir Robert Peel.