See also Stanislaw Albrecht Radziwill.Stanislaw "the Pious" Radziwill (Lithuanian: Stanislovas Radvila II) (May 12, 1559 – March 19, 1599) was a sixth generation Radziwill family noble (szlachcic) of the Grand Duchy of Lithuania in the Polish-Lithuanian Commonwealth.
He was a general starost (elder) of the Duchy of Samogitia (Samaiten, from 1595 until his death), a first ordynat of Olyka, and the Great Lithuanian Marshal (from 1592 until his death).
He was the son of Mikolaj "the Black" Radziwill and Elzbieta Szydlowiecka.
Raised as a Calvinist, he converted to Roman Catholicism and was known as a very pious person, which gained him the nickname Pobozny (Pious).
He was also known for his scholarly interests - he collected books and could read in many languages.
He avoided politics, but fought in the wars with Muscovy under the Polish king Stefan Batory.