The representative of the old gentry family Lev Sapega was a prominent political, public and military figure. Throughout his life, he held high positions in the Grand Duchy of Lithuania, served as a royal clerk, chancellor of the principality from 1589 and grand hetman from 1625.
One of the richest and most influential magnates of the GDL, in 1581 he took part in the creation of the Tribunal of the GDL, and for the 3rd Statute, published in 1588, he wrote a preface in the form of an appeal to Prince Zhigimont III Vaza and the people. As a code of laws, the Statute was in force on the territory of Belarus for more than 250 years ─until 1840.