Svyatopolk-Mirsky

The House of Sviatopolk-Mirsky (Belarusian: Святаполк-Мірскі, romanized: Svjatapołk-Mirski, Russian: Святополк-Мирский, romanized: Svyatopolk-Mirsky, Polish: Światopełk-Mirski, also transliterated using Swiatopolk or Mirskii) is a family of nobility in the Grand Duchy of Lithuania, Russian Empire, and Poland that originated from present-day northwestern Belarus.

They first appeared in the Grand Duchy of Lithuania in the late 15th century as "Mirsky" – the name probably derived from the town of Miory in the former Principality of Polotsk, although it is possible[original research?]

The memoirs of Prince Pyotr Vladimirovich Dolgorukov assert that the Sviatopolk-Mirsky family were nobility descending from Rurik who submitted to Gediminas (Grand Duke of Lithuania from 1316 to 1341) and became magnates.

The Genealogical Handbook of the Nobility (Genealogisches Handbuch des Adels [de]) states that the Sviatopolk-Mirsky family descends from a younger branch of the Princes of Turov.

The painting, "Portrait of Maria Mirska, Adam Napoleon Mirski and Barbara Szumska" is on display at the National Museum in Warsaw.

Coat of Arms of the Princes Sviatopolk-Mirsky
Nikolai Sviatopolk-Mirsky and his descendants used a variation of the Białynia coat of arms