Lady Elizabeth O'Brien Peerage person ID=318293 (1642–1688) Parents Murrough O'Brien, 1st Earl of Inchiquin Elizabeth St. Leger Children Elizabeth Southwell Thomas Southwell, 1st Baron Southwell William Southwell Richard Southwell John Southwell Katherine Southwell Siblings Lady Mary O'Brien Charles O'Brien John O'Brien William O'Brien, 2nd Earl of Inchiquin Lady Honora O'Brien Partners John MacNamara Richard Southwell