Thomas Southwell, 1st Baron Southwell

Thomas Southwell, 1st Baron Southwell PC (Ire) (1665 – 4 August 1720), known as Sir Thomas Southwell, 2nd Baronet from 1681 to 1717, was an Irish peer and politician.

Background He was the oldest son of Richard Southwell, son of Sir Thomas Southwell, 1st Baronet, and his wife Lady Elizabeth O'Brien, daughter of Murrough O'Brien, 1st Earl of Inchiquin. His younger brothers were William Southwell and Richard Southwell. In 1681, his father having predeceased him, Southwell succeeded his grandfather as baronet. During the Glorious Revolution of 1689, after he led an unsuccessful rising in County Galway, he and his brother were attainted by the parliament of King James II of England.

Career In 1695, Southwell entered the Irish House of Commons for County Limerick, representing it until 1713. He was returned for the constituency again from 1715 until August 1717, In 1697, Southwell became a Commissioner of the Revenue, however resigned in 1712.

Family In April 1696, he married Lady Meliora Coningsby, eldest daughter of Thomas Coningsby, 1st Earl Coningsby and his first wife Barbara Gorges. He was succeeded in his titles by his oldest son Thomas. His second son Henry also sat in the Parliament of Ireland.