Thomas George Southwell, 1st Viscount Southwell of Castle Mattress, 3rd Baron Southwell of Castle Mattress, 3rd Baronet Southwell, Governor of Limerick Castle, Governor of County Limerick, Member of the Irish House of Commons
Dates: 4 May 1721–29 August 1780
Biography
Irish peer, army officer and politician. He succeeded his father as Baron Southwell in 1766 and was created Viscount Southwell on 18 July 1776. He married Margaret Hamilton of Castle Hamilton on 18 June 1741. Their marriage connected the Southwell peerage and County Limerick estates with the Castle Hamilton inheritance in County Cavan.
Notes / Sources
Complete Peerage, Southwell entry — https://en.wikisource.org/wiki/Page:The_Complete_Peerage_Ed_1_Vol_7.djvu/203
Viscount Southwell arms and title summary — https://en.wikipedia.org/wiki/Viscount_Southwell
Getty 18th-century Southwell arms engraving — https://www.gettyimages.com.br/detail/ilustra%C3%A7%C3%A3o/coat-of-arms-lord-southwell-18th-century-ilustra%C3%A7%C3%A3o-royalty-free/172465586
University of Galway, Southwell estate — https://landedestates.ie/family/3898
Family / Armorial Context
Family / cadet branch: Southwell of Castle Mattress
Father: Thomas Southwell, 2nd Baron Southwell
Mother: Mary Coke
Spouse(s): Margaret Cecil Hamilton
Children / next generation: Thomas Arthur Southwell, 2nd Viscount Southwell; Robert Henry Southwell; Meliora or a daughter Southwell, later connected with the Brown family
Armorial Registry
Southwell of Castle Mattress — Thomas George Southwell, 1st Viscount, and the Hamilton heiress marriage
Branch: Southwell of Castle Mattress, County Limerick
Issued / recorded: 1741
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