Margaret Cecil Hamilton, Viscountess Southwell of Castle Mattress from 18 July 1776 by her husband's elevation, heiress and coheiress of Castle Hamilton property
Dates: died 18 July 1802; married 18 June 1741
Biography
Daughter and coheiress of Arthur Cecil Hamilton of Castle Hamilton, County Cavan, and Anne Connor, daughter and heir of Thomas Connor of Dublin. She married Thomas George Southwell on 18 June 1741. Through this marriage, the Castle Hamilton inheritance entered the Southwell family. Her younger son Robert Henry Southwell later occupied and inherited the Castle Hamilton property.
Notes / Sources
Complete Peerage, Southwell entry — https://en.wikisource.org/wiki/Page:The_Complete_Peerage_Ed_1_Vol_7.djvu/203
University of Galway, Hamilton of Castle Hamilton — https://landedestates.ie/family/3898
Cavan Townlands, Cloggy article — https://cavantownlands.ie/wp-content/uploads/2021/03/Cloggy-Article-CT.pdf
Hamilton heraldry, Castle Killaugh entry — https://electricscotland.com/webclans/htol/hamilton_heraldry.pdf
Family / Armorial Context
Family / cadet branch: Cecil-Hamilton of Castle Hamilton
Father: Arthur Cecil Hamilton
Mother: Anne Connor
Spouse(s): Thomas George Southwell, 1st Viscount Southwell of Castle Mattress
Children / next generation: Thomas Arthur Southwell, 2nd Viscount Southwell; Robert Henry Southwell of Castle Hamilton; at least one further daughter, recorded in genealogical sources as Meliora or a daughter Southwell
Armorial Registry
Cecil-Hamilton of Castle Hamilton — Margaret Cecil Hamilton, coheiress and Southwell marriage transmitter
Branch: Cecil-Hamilton of Castle Hamilton, County Cavan; female coheir of Arthur Cecil Hamilton
Issued / recorded: 1720
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