Alexei Antonovich of Brunswick

E451346

Russian prince heir apparent member of the House of Romanov

Alexei Antonovich of Brunswick was a Russian imperial prince and briefly the de facto heir to the Russian throne as the son of regent Anna Leopoldovna and Duke Anthony Ulrich of Brunswick.

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All labels observed (3)

Label	Occurrences
Alexei Antonovich of Brunswick canonical	2
Peter Antonovich of Brunswick	2
Aleksey of Russia	1

How this entity was disambiguated

This entity first appeared as the object of triple T4535383 — 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: Alexei Antonovich of Brunswick
Context triple: [Anna Leopoldovna, child, Alexei Antonovich of Brunswick]

A. Grand Duke Alexander Mikhailovich of Russia
Grand Duke Alexander Mikhailovich of Russia was a Romanov dynast, naval officer, and influential advisor to the last Russian emperor Nicholas II, known for his role in modernizing the Imperial Russian Navy and his writings in exile after the Revolution.
B. Grand Duke Peter Nikolaevich of Russia
Grand Duke Peter Nikolaevich of Russia was a Romanov prince and high-ranking member of the Russian imperial family who lived in exile after the Russian Revolution.
C. Grand Duke Sergei Mikhailovich of Russia
Grand Duke Sergei Mikhailovich of Russia was a Romanov grand duke and Russian imperial military commander who served as Inspector General of Artillery during the late Russian Empire and was executed by the Bolsheviks after the Revolution.
D. Grand Duke Andrei Vladimirovich of Russia
Grand Duke Andrei Vladimirovich of Russia was a Romanov prince and military officer who lived in exile after the Russian Revolution and was known for his controversial morganatic marriage to the ballerina Mathilde Kschessinska.
E. Grand Duke Paul Alexandrovich of Russia
Grand Duke Paul Alexandrovich of Russia was a younger son of Emperor Alexander II who became a prominent, though often scandal-embroiled, member of the late Romanov imperial family and a general in the Russian army.
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: Alexei Antonovich of Brunswick
Target entity description: Alexei Antonovich of Brunswick was a Russian imperial prince and briefly the de facto heir to the Russian throne as the son of regent Anna Leopoldovna and Duke Anthony Ulrich of Brunswick.

A. Grand Duke Alexander Mikhailovich of Russia
Grand Duke Alexander Mikhailovich of Russia was a Romanov dynast, naval officer, and influential advisor to the last Russian emperor Nicholas II, known for his role in modernizing the Imperial Russian Navy and his writings in exile after the Revolution.
B. Grand Duke Peter Nikolaevich of Russia
Grand Duke Peter Nikolaevich of Russia was a Romanov prince and high-ranking member of the Russian imperial family who lived in exile after the Russian Revolution.
C. Grand Duke Sergei Mikhailovich of Russia
Grand Duke Sergei Mikhailovich of Russia was a Romanov grand duke and Russian imperial military commander who served as Inspector General of Artillery during the late Russian Empire and was executed by the Bolsheviks after the Revolution.
D. Grand Duke Andrei Vladimirovich of Russia
Grand Duke Andrei Vladimirovich of Russia was a Romanov prince and military officer who lived in exile after the Russian Revolution and was known for his controversial morganatic marriage to the ballerina Mathilde Kschessinska.
E. Grand Duke Paul Alexandrovich of Russia
Grand Duke Paul Alexandrovich of Russia was a younger son of Emperor Alexander II who became a prominent, though often scandal-embroiled, member of the late Romanov imperial family and a general in the Russian army.
F. None of above. chosen

Statements (33)

Predicate	Object
instanceOf	Russian prince ⓘ heir apparent ⓘ member of the House of Romanov ⓘ
countryOfCitizenship	Russian Empire ⓘ
dateOfBirth	1746-03-14 ⓘ
dynasty	House of Romanov-Brunswick NERFINISHED ⓘ
era	18th century ⓘ
familyName	of Brunswick ⓘ
father	Anthony Ulrich, Duke of Brunswick-Lüneburg NERFINISHED ⓘ
givenName	Alexei NERFINISHED ⓘ
grandfather	Ferdinand Albert II, Duke of Brunswick-Wolfenbüttel NERFINISHED ⓘ
grandmother	Antoinette Amalie of Brunswick-Wolfenbüttel NERFINISHED ⓘ
languageOfName	German ⓘ Russian ⓘ
maternalGrandfather	Ferdinand Leopold, Duke of Mecklenburg-Schwerin NERFINISHED ⓘ
mother	Anna Leopoldovna NERFINISHED ⓘ
motherTitle	regent of Russia ⓘ
nobleTitle	Prince of Brunswick-Lüneburg NERFINISHED ⓘ Russian imperial prince ⓘ
notableFor	being a Russian imperial prince ⓘ being briefly de facto heir to the Russian throne ⓘ
notableRelative	Empress Anna of Russia NERFINISHED ⓘ Empress Elizabeth of Russia NERFINISHED ⓘ
paternalFamily	House of Brunswick-Lüneburg NERFINISHED ⓘ
patronymicName	Antonovich NERFINISHED ⓘ
placeOfBirth	Russian Empire ⓘ Saint Petersburg NERFINISHED ⓘ
positionHeld	de facto heir to the Russian throne ⓘ
religion	Russian Orthodox Church ⓘ
sibling	Catherine Antonovna of Brunswick NERFINISHED ⓘ Elisabeth Antonovna of Brunswick NERFINISHED ⓘ Ivan Antonovich of Russia NERFINISHED ⓘ Peter Antonovich of Brunswick NERFINISHED ⓘ

How these facts were elicited

Referenced by (5)

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

Anna Leopoldovna → child → Alexei Antonovich of Brunswick ⓘ

this entity surface form: Peter Antonovich of Brunswick

Anna Leopoldovna → child → Alexei Antonovich of Brunswick ⓘ

Archangel Cathedral, Moscow Kremlin → burialPlaceOf → Alexei Antonovich of Brunswick ⓘ

this entity surface form: Aleksey of Russia

Anthony Ulrich of Brunswick → child → Alexei Antonovich of Brunswick ⓘ