Thomas Southwell, 4th Viscount Southwell Irish viscount (1836–1878) (1836–1878) Parents Mary Anne Agnes Dillon Arthur Francis Southwell Children Frances Southwell Arthur Southwell, 5th Viscount Southwell of Castle Mattress Siblings Margaret Mary Southwell Mary Paulina Anne Southwell Jane Mary Matilda Southwell Charles Francis Xavier Southwell Marcella Maria Agnes Southwell Partners Charlotte Mostyn
