Debenham, Margaret and Patrick M. Geoghegan, ‘William Southwell’, in Dictionary of Irish Biography <https://www.dib.ie/biography/southwell-william-a8201> [accessed 8 August 2021]

Southwell, John (ii) | before 1804–1844
Southwell, William | 1781–c. 1815
Subscribe to Debenham, Margaret and Patrick M. Geoghegan, ‘William Southwell’, in Dictionary of Irish Biography &lt;https://www.dib.ie/biography/southwell-william-a8201&gt; [accessed 8 August 2021]