Belsky family (Gediminid)

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The Belsky or Belski family (Russian: Бельский; plural: Бельские) was a Ruthenianized princely family of Gediminid origin in the Grand Duchy of Lithuania. It later defected to the Grand Duchy of Moscow and played a key role during the regency of Ivan IV of Russia. The family started with Ivan Vladimirovich, son of Vladimir Olgerdovich and grandson of Algirdas, and ended with Ivan Dmitrievich Belsky in 1571. The Belsky name was derived from their principal possession of Bely, Tver Oblast.