Barry Yelverton, 1st Viscount Avonmore

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Barry Yelverton, 1st Viscount Avonmore, PC (Ire) KC (28 May 1736 – 19 August 1805) was an Irish judge and politician, who gave his name to Yelverton's Act 1782, which effectively repealed Poynings' Law and thus restored the independence of the Parliament of Ireland. This achievement was entirely destroyed by the Act of Union 1800, which Yelverton supported. By so doing gravely harmed his own reputation for integrity, which had already been damaged by the conviction and execution for treason of William Orr, which is seen as a major miscarriage of justice.

He became Attorney-General for Ireland in 1782, and was elevated to the bench as Lord Chief Baron of the Exchequer in 1783. He was created Baron Yelverton in 1795, and in 1800 Viscount Avonmore in the Peerage of Ireland. As Chief Baron he led the opposition to the proposal to increase the number of judges in each of the courts of common law[6] from three to four, on the practical ground that four-judge courts often divide evenly and thus cannot reach an effective decision. Despite this commonsense view, new judges were eventually appointed.