Treaty of St. Marys (1818)
E304323
The Treaty of St. Marys (1818) was a U.S.–Native American agreement in which the Miami and other tribes ceded large tracts of land in present-day Indiana and Ohio to the United States, facilitating American expansion in the Old Northwest.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Treaty of St. Marys (1818) canonical | 4 |
| Treaty of 1818 | 1 |
| Treaty of St. Mary's (1818) | 1 |
| Treaty of St. Mary’s (1818) | 1 |
| series of Treaties of St. Marys | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2813423 — 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: Treaty of St. Marys (1818) Context triple: [Miami tribe, signedTreaty, Treaty of St. Marys (1818)]
-
A.
Treaty of St. Louis (1818)
The Treaty of St. Louis (1818) was an agreement between the United States and several Native American tribes that further ceded tribal lands in the Midwest to the U.S. government as part of its westward expansion.
-
B.
Treaty of 1837 with the United States
The Treaty of 1837 with the United States was an agreement in which the Ho-Chunk (Winnebago) Nation ceded large portions of their ancestral lands in the Upper Midwest to the U.S. government, contributing to their forced removal and displacement.
-
C.
Treaty of Washington (1826)
The Treaty of Washington (1826) was an agreement in which the Muscogee (Creek) Nation ceded large portions of their remaining lands in the southeastern United States to the U.S. government, furthering Native American dispossession and paving the way for increased white settlement.
-
D.
Convention of 1818
The Convention of 1818 was an agreement between the United States and Great Britain that settled parts of the U.S.-Canada boundary and established joint occupation of the Oregon Country.
-
E.
Treaty of St. Louis (1825)
The Treaty of St. Louis (1825) was an agreement between the United States and several Native American tribes that further ceded Indigenous lands in the Midwest to the U.S. government as part of its westward expansion.
- 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: Treaty of St. Marys (1818) Target entity description: The Treaty of St. Marys (1818) was a U.S.–Native American agreement in which the Miami and other tribes ceded large tracts of land in present-day Indiana and Ohio to the United States, facilitating American expansion in the Old Northwest.
-
A.
Treaty of St. Louis (1818)
The Treaty of St. Louis (1818) was an agreement between the United States and several Native American tribes that further ceded tribal lands in the Midwest to the U.S. government as part of its westward expansion.
-
B.
Treaty of 1837 with the United States
The Treaty of 1837 with the United States was an agreement in which the Ho-Chunk (Winnebago) Nation ceded large portions of their ancestral lands in the Upper Midwest to the U.S. government, contributing to their forced removal and displacement.
-
C.
Treaty of Washington (1826)
The Treaty of Washington (1826) was an agreement in which the Muscogee (Creek) Nation ceded large portions of their remaining lands in the southeastern United States to the U.S. government, furthering Native American dispossession and paving the way for increased white settlement.
-
D.
Convention of 1818
The Convention of 1818 was an agreement between the United States and Great Britain that settled parts of the U.S.-Canada boundary and established joint occupation of the Oregon Country.
-
E.
Treaty of St. Louis (1825)
The Treaty of St. Louis (1825) was an agreement between the United States and several Native American tribes that further ceded Indigenous lands in the Midwest to the U.S. government as part of its westward expansion.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
United States–Native American treaty
ⓘ
treaty ⓘ |
| alsoKnownAs |
Treaty of St. Mary’s (1818)
ⓘ
linked to:
Treaty of St. Marys (1818)
|
| appliesToTerritory |
Indiana
ⓘ
Ohio ⓘ |
| category |
1818 in American law
ⓘ
Native American history of Indiana ⓘ Native American history of Ohio ⓘ Treaties involving territorial changes ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| effectOn |
Miami land holdings in Indiana and Ohio
ⓘ
U.S. control of land in the Old Northwest ⓘ |
| follows | earlier U.S.–Native American treaties in the Northwest Territory ⓘ |
| historicalPeriod | early 19th century ⓘ |
| language | English ⓘ |
| legalForm | land cession treaty ⓘ |
| locatedInTheAdministrativeTerritorialEntity | Old Northwest ⓘ |
| partOf |
series of Treaties of St. Marys
ⓘ
linked to:
Treaty of St. Marys (1818)
|
| purpose | facilitate American expansion in the Old Northwest ⓘ |
| result | cession of Native American land to the United States ⓘ |
| signatory |
Delaware
ⓘ
Kickapoo ⓘ Miami ⓘ Potawatomi ⓘ United States ⓘ
linked to:
United States of America
Wea ⓘ |
| signedIn | St. Marys, Ohio ⓘ |
| signingDate | 1818 ⓘ |
| topic |
Native American land cessions
ⓘ
U.S. westward expansion ⓘ |
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: Treaty of St. Marys (1818) Description of subject: The Treaty of St. Marys (1818) was a U.S.–Native American agreement in which the Miami and other tribes ceded large tracts of land in present-day Indiana and Ohio to the United States, facilitating American expansion in the Old Northwest.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Treaty of St. Marys (1818)
linked to: Treaty of St. Marys (1818)
linked to: Treaty of St. Marys (1818)
linked to: Treaty of St. Marys (1818)