Lady Mary O’Brien
E1203934
UNEXPLORED
Lady Mary O’Brien was an Irish noblewoman of the O’Brien family who became the mother of James FitzGerald, 1st Duke of Leinster, one of the most prominent Anglo-Irish aristocrats of the 18th century.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Lady Mary O’Brien canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T16286483 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Lady Mary O’Brien Context triple: [James FitzGerald, 1st Duke of Leinster, mother, Lady Mary O’Brien]
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A.
Lady Mary Acheson
Lady Mary Acheson was a British aristocrat best known as the wife of statesman and colonial administrator Lord William Bentinck.
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B.
Lady Rose MacClare
Lady Rose MacClare is a lively and rebellious young aristocrat in the British period drama series "Downton Abbey," known for her modern attitudes and romantic escapades within the rigid confines of early 20th-century high society.
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C.
Lady Mary Nugent
Lady Mary Nugent was an 18th–19th century British aristocrat and political hostess associated with the influential Grenville political family.
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D.
Lady Mary Rexford
Lady Mary Rexford is a fictional aristocratic character appearing in the 1934 romantic drama film "Riptide."
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E.
Lady Mary Finch
Lady Mary Finch was an 18th-century British aristocrat best known as the mother of Charles Watson-Wentworth, 2nd Marquess of Rockingham, a prominent Whig statesman and two-time Prime Minister of Great Britain.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Lady Mary O’Brien Target entity description: Lady Mary O’Brien was an Irish noblewoman of the O’Brien family who became the mother of James FitzGerald, 1st Duke of Leinster, one of the most prominent Anglo-Irish aristocrats of the 18th century.
-
A.
Lady Mary Acheson
Lady Mary Acheson was a British aristocrat best known as the wife of statesman and colonial administrator Lord William Bentinck.
-
B.
Lady Rose MacClare
Lady Rose MacClare is a lively and rebellious young aristocrat in the British period drama series "Downton Abbey," known for her modern attitudes and romantic escapades within the rigid confines of early 20th-century high society.
-
C.
Lady Mary Nugent
Lady Mary Nugent was an 18th–19th century British aristocrat and political hostess associated with the influential Grenville political family.
-
D.
Lady Mary Rexford
Lady Mary Rexford is a fictional aristocratic character appearing in the 1934 romantic drama film "Riptide."
-
E.
Lady Mary Finch
Lady Mary Finch was an 18th-century British aristocrat best known as the mother of Charles Watson-Wentworth, 2nd Marquess of Rockingham, a prominent Whig statesman and two-time Prime Minister of Great Britain.
- F. None of above. chosen
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
James FitzGerald, 1st Duke of Leinster