Maharaja Jai Singh II

E109353

Rajput ruler astronomer founder of Jaipur king of Amber

Maharaja Jai Singh II was an 18th-century Rajput ruler of Amber and a renowned astronomer-king known for commissioning monumental observatories and advancing astronomical science in India.

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All labels observed (4)

Label	Occurrences
Sawai Jai Singh II	17
Maharaja Sawai Jai Singh II	16
Maharaja Jai Singh II canonical	5
Jai Singh II	2

How this entity was disambiguated

This entity first appeared as the object of triple T932795 — 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: Maharaja Jai Singh II
Context triple: [Jantar Mantar, New Delhi, builder, Maharaja Jai Singh II]

A. Balaji Vishwanath
Balaji Vishwanath was the first Peshwa of the Maratha Empire to wield de facto executive power, laying the foundations for Peshwa dominance in 18th-century western India.
B. Scindia of Gwalior
Scindia of Gwalior is a prominent Maratha royal dynasty that rose to power in the 18th century and ruled the princely state of Gwalior in central India.
C. Yashwantrao Holkar
Yashwantrao Holkar was a prominent early 19th-century Maratha military leader and ruler of Indore, known for his resistance against British expansion in India.
D. Gaekwad of Baroda
Gaekwad of Baroda refers to the prominent Maratha royal dynasty that ruled the princely state of Baroda (now Vadodara) in western India, known for its influential governance and patronage of social and educational reforms.
E. Bhonsle of Nagpur
The Bhonsle of Nagpur was a prominent Maratha royal house that ruled the Nagpur kingdom in central India and played a key role in the expansion and administration of the Maratha Empire.
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: Maharaja Jai Singh II
Target entity description: Maharaja Jai Singh II was an 18th-century Rajput ruler of Amber and a renowned astronomer-king known for commissioning monumental observatories and advancing astronomical science in India.

A. Balaji Vishwanath
Balaji Vishwanath was the first Peshwa of the Maratha Empire to wield de facto executive power, laying the foundations for Peshwa dominance in 18th-century western India.
B. Scindia of Gwalior
Scindia of Gwalior is a prominent Maratha royal dynasty that rose to power in the 18th century and ruled the princely state of Gwalior in central India.
C. Yashwantrao Holkar
Yashwantrao Holkar was a prominent early 19th-century Maratha military leader and ruler of Indore, known for his resistance against British expansion in India.
D. Gaekwad of Baroda
Gaekwad of Baroda refers to the prominent Maratha royal dynasty that ruled the princely state of Baroda (now Vadodara) in western India, known for its influential governance and patronage of social and educational reforms.
E. Bhonsle of Nagpur
The Bhonsle of Nagpur was a prominent Maratha royal house that ruled the Nagpur kingdom in central India and played a key role in the expansion and administration of the Maratha Empire.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	Rajput ruler ⓘ astronomer ⓘ founder of Jaipur ⓘ king of Amber ⓘ
birthPlace	Amber ⓘ
birthYear	1688 ⓘ
capitalRelocatedTo	Jaipur ⓘ
capitalRelocationYear	1727 ⓘ
commissioned	Jantar Mantar, Delhi ⓘ linked to: Jantar Mantar, New Delhi Jantar Mantar, Jaipur ⓘ Jantar Mantar, Mathura ⓘ Jantar Mantar, Ujjain ⓘ Jantar Mantar, Varanasi ⓘ
country	India ⓘ
deathPlace	Jaipur ⓘ
deathYear	1743 ⓘ
designedCityOnPrinciplesOf	Shilpa Shastra ⓘ linked to: Shilpa Shastras Vastu Shastra ⓘ
dynasty	Kachwaha dynasty ⓘ
era	18th century ⓘ
ethnicity	Rajput ⓘ
fieldOfWork	architecture ⓘ astronomy ⓘ urban planning ⓘ
founded	Kingdom of Jaipur ⓘ city of Jaipur ⓘ linked to: Jaipur
fullName	Sawai Jai Singh II ⓘ linked to: Maharaja Jai Singh II
honorificTitle	Sawai ⓘ linked to: Thakur
influenced	development of observational astronomy in India ⓘ
interactedWith	Mughal Empire ⓘ linked to: Mughal Empire (in much of the territory)
knownFor	Jantar Mantar observatories ⓘ linked to: Astronomical Observatories of Jai Singh constructing astronomical observatories ⓘ patronage of astronomy ⓘ urban planning of Jaipur ⓘ
legacy	Jantar Mantar, Jaipur UNESCO World Heritage Site ⓘ linked to: Jantar Mantar, Jaipur
notableWork	Jantar Mantar observatory complex in Delhi ⓘ linked to: Jantar Mantar, New Delhi Jantar Mantar observatory complex in Jaipur ⓘ linked to: Jantar Mantar, Jaipur
promoted	reform of traditional Indian astronomy ⓘ
regionRuled	Rajasthan ⓘ
reignEnd	1743 ⓘ
reignStart	1699 ⓘ
religion	Hinduism ⓘ
ruled	Kingdom of Amber ⓘ
servedAs	Mughal vassal ⓘ
successorState	Princely State of Jaipur ⓘ linked to: Kingdom of Jaipur
title	Maharaja of Amber ⓘ linked to: Maharaja Maharaja of Jaipur ⓘ linked to: Maharaja Sawai Pratap Singh
used	large masonry instruments for astronomical observations ⓘ

How these facts were elicited

Referenced by (40)

Full triples — surface form annotated when it differs from this entity's canonical label.

Jantar Mantar, New Delhi → builder → Maharaja Jai Singh II ⓘ

Jantar Mantar, New Delhi → commissionedBy → Maharaja Jai Singh II ⓘ

Amber Fort → expandedBy → Sawai Jai Singh II ⓘ