Lady Mary O'Brien Peerage person ID=360384 (b. 1650) Parents Elizabeth St. Leger Murrough O'Brien, 1st Earl of Inchiquin Children Margaret Boyle Charles Boyle Henry Boyle, 1st Earl of Shannon William Boyle Roger Boyle Michael O'Brien Dilkes Siblings Charles O'Brien Lady Elizabeth O'Brien John O'Brien William O'Brien, 2nd Earl of Inchiquin Lady Honora O'Brien Partners John Irwin Thomas Dilkes Henry Boyle