Agar was returned to the Irish House of Commons for both Gowran and County Kilkenny in 1783, but chose to sit for the latter, a seat he held until 1789, when he succeeded his father in the Irish viscountcy and entered the Irish House of Lords.
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Henry Welbore Agar - Ellis, 2nd Viscount Clifden, born at Gowran Castle, Gowran, Co.
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Born Henry Welbore Agar, he was the eldest son of James Agar, 1st Viscount Clifden of Gowran Castle, Gowran, Co.
He was accused by Walter Cowley, the Principal Solicitor for Ireland, who was generally regarded as his tool, of inducing Cowley to write the "Gowran letter" where St. Leger was accused of deliberately endangering the life of James Butler, 9th Earl of Ormond: Cowley certainly wrote the letter but whether Alan had any part in it is unclear.