Mary O'Brien, 3rd Countess Of Orkney
| Use attributes for filter ! | |
| Gender | Female |
|---|---|
| Date of birth | January 1,1721 |
| Died | 1791 |
| Great grandchild | Thomas FitzMaurice, 5th Earl of Orkney |
| William Edward Fitzmaurice | |
| Great grandparent | Anne Hamilton, 3rd Duchess of Hamilton |
| Grandchildren | John FitzMaurice, Viscount Kirkwall |
| Grandparents | Elizabeth Hamilton, Countess of Orkney |
| Children | Mary FitzMaurice, 4th Countess of Orkney |
| Date of Reg. | |
| Date of Upd. | |
| ID | 4535234 |
Mary O'Brien, 3rd Countess Of Orkney Life story
Mary O'Brien, 3rd Countess of Orkney was the eldest daughter of Anne O'Brien, 2nd Countess of Orkney, and William O'Brien, 4th Earl of Inchiquin, and Countess of Orkney in her own right.