World of HYDE
Discovering our Ancestors and their descendants to all parts of the world. Last updated 15th March 2026.
Family: Connor O'Brien, 3rd Earl Of Thomond / Una, Countess Of Thomond (F44291)
m. Abt 1551
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Male
Connor O'Brien, 3rd Earl Of Thomond
Birth 1534 Clonemore Cross Roads, Offaly, Leinster (Ireland) 
Death 1 Jan 1581 Abbey, Paisley, Renfrew, Scotland Burial Ennis, County Clare, Ireland Marriage Abt 1551 Droíchead An Chláir, County Clare, Ireland Other Spouse Evelyn Mor MacCarthy | F44292 Marriage 1553 Ireland Other Spouse Joan Fitzmaurice | F44293 Marriage Father Donnchadh Ramhar O'Brien | F44282 Group Sheet Mother Lady Helen Butler | F44282 Group Sheet
Female
Una, Countess Of Thomond
Birth 1533 Arragh More, County Tipperary, Ireland Death 1589 Droíchead An Chláir, County Clare, Ireland Burial Father Mother
Female
Lady Margaret O'Brien
Birth Abt 1555 Droíchead An Chláir, Clare, Ireland Death 20 Feb 1636 Saint Patricks, Cashel, Ireland Burial Spouse Sir James Butler,, 12th Baron of Dunboyne | F44304 Marriage Bef 1575 Burnchurch, Kilkenny, Ireland
Male
Donogh O'Brien, 4th Earl Of Thomond
Birth 1560 Cork, County Cork, Ireland Death 5 Sep 1624 Clonmel, Waterford, Ireland Burial Sep 1624 Limerick, County Limerick, Ireland Spouse Elisabeth Fitzgerald | F44298 Marriage 16 Nov 1585 Thomond, County Clare, Ireland
Female
Lady Mary O'Brien
Birth Abt 1569 Clonderalaw, Clare, Ireland Death Abt 1639 Burial Spouse Sir Turlach Rua MacMahon | F44303 Marriage
Female
Honora O'Brien
Birth 1575 Arra, Tipperary, Ireland Death 1600 Clare, Ireland Burial Spouse Thomas Fitzmaurice, 18th Lord Of Kerry | F44305 Marriage 1588 Ireland
Male
Daniel O'Brien
Birth 1577 France Death 1664 County Clare, Ireland Burial Spouse Catherine Fitzgerald | F44306 Marriage Abt 1600 Limerick, Limerick, Ireland
Male
Teige O'Brien
Birth 1580 Ireland Death 1599 Burial Spouse Elizabeth Fitzgerald | F44307 Marriage 1599 Ireland