Sudebnik of 1550
The Sudebnik of 1550 (Russian: Судебник 1550 года), also known as the Sudebnik of Ivan IV (Russian: Судебник Ивана IV), was an expansion and revision of the Sudebnik of 1497 by Ivan IV of Russia, a code of laws originally instituted by Ivan III, his grandfather. It is considered the result of the first Russian parliament of feudal estates (Zemsky Sobor).