William C. Hammer
E770434
William C. Hammer was the North Carolina textile mill worker and father who challenged the federal child labor law in the 1918 U.S. Supreme Court case Hammer v. Dagenhart.
All labels observed (1)
| Label | Occurrences |
|---|---|
| William C. Hammer canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3095400 — 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: William C. Hammer Context triple: [Hammer v. Dagenhart, plaintiff, William C. Hammer]
-
A.
Charles S. Hamlin
Charles S. Hamlin was an American lawyer and public official who became the first chairman of the Federal Reserve Board, helping to establish the early framework of U.S. central banking policy.
-
B.
William B. Isham
William B. Isham was a New York businessman and landowner whose former estate in northern Manhattan became the public green space now known as Isham Park.
-
C.
Leland J. Hamlin
Leland J. Hamlin is an individual notable enough to be specifically cited as a bearer of the Hamlin surname, though detailed public information about his life or achievements appears to be limited.
-
D.
William G. Livesay
William G. Livesay was a U.S. Army officer who served as a notable commander of the 3rd Infantry Division.
-
E.
Harry M. Wegeforth
Harry M. Wegeforth was an American physician and civic leader best known for establishing and guiding the early development of the San Diego Zoo into a major zoological institution.
- 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: William C. Hammer Target entity description: William C. Hammer was the North Carolina textile mill worker and father who challenged the federal child labor law in the 1918 U.S. Supreme Court case Hammer v. Dagenhart.
-
A.
Charles S. Hamlin
Charles S. Hamlin was an American lawyer and public official who became the first chairman of the Federal Reserve Board, helping to establish the early framework of U.S. central banking policy.
-
B.
William B. Isham
William B. Isham was a New York businessman and landowner whose former estate in northern Manhattan became the public green space now known as Isham Park.
-
C.
Leland J. Hamlin
Leland J. Hamlin is an individual notable enough to be specifically cited as a bearer of the Hamlin surname, though detailed public information about his life or achievements appears to be limited.
-
D.
William G. Livesay
William G. Livesay was a U.S. Army officer who served as a notable commander of the 3rd Infantry Division.
-
E.
Harry M. Wegeforth
Harry M. Wegeforth was an American physician and civic leader best known for establishing and guiding the early development of the San Diego Zoo into a major zoological institution.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf |
litigant
ⓘ
person ⓘ textile worker ⓘ |
| areaOfActivity |
constitutional law controversy
ⓘ
labor law litigation ⓘ |
| caseDecidedBy | Supreme Court of the United States ⓘ |
| caseDecisionDate | 1918 ⓘ |
| causeOfFame | being named party in Hammer v. Dagenhart ⓘ |
| countryOfCitizenship | United States of America ⓘ |
| employer | textile mill in North Carolina ⓘ |
| ethnicGroup | white American ⓘ |
| hasChild |
Roland Dagenhart
ⓘ
another minor son employed in the mill ⓘ |
| hasNameInCourtRecords | Dagenhart ⓘ |
| hasRelative | minor sons employed in textile mill ⓘ |
| hasRole | plaintiff ⓘ |
| languageSpoken | English ⓘ |
| legalAction | challenged the Keating–Owen Child Labor Act of 1916 ⓘ |
| legalClaim |
federal child labor law interfered with his right to his sons’ labor
ⓘ
federal child labor law violated states’ rights ⓘ |
| legalContext |
Keating–Owen Child Labor Act of 1916
ⓘ
linked to:
Keating–Owen Child Labor Act
|
| notableFor | challenging federal regulation of child labor under the Commerce Clause ⓘ |
| notableWork | Hammer v. Dagenhart ⓘ |
| occupation | textile mill worker ⓘ |
| opposed | federal child labor law ⓘ |
| opposedBy |
U.S. government
ⓘ
linked to:
United States government
|
| participantIn | Hammer v. Dagenhart ⓘ |
| partOf | Southern textile mill working class ⓘ |
| placeOfActivity |
Piedmont textile region of the American South
ⓘ
linked to:
Piedmont region
|
| positionHeld | father and next friend of minor sons in litigation ⓘ |
| religion | Protestant Christianity ⓘ |
| representedBy | attorneys challenging the Keating–Owen Act ⓘ |
| residence | Charlotte, North Carolina ⓘ |
| sexOrGender | male ⓘ |
| timePeriod | early 20th century ⓘ |
| workLocation | North Carolina ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: William C. Hammer Description of subject: William C. Hammer was the North Carolina textile mill worker and father who challenged the federal child labor law in the 1918 U.S. Supreme Court case Hammer v. Dagenhart.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.