Career
Despite being a supporter of the government, he was critical of sanacja"s excesses (persecution of political opponents, censorship). In 1937 he joined the Camp of National Unity (OZON). After the Soviet invasion of Poland in 1939, he was arrested by People’s Commissariat of Internal Affairs. Imprisoned in the infamous Lubyanka prison, he was personally interrogated by Lavrentiy Beria.
He was released after a few months after international pressure from among others the Italian royal family (due to the prestige of the Radziwiłł family).
He returned to Nazi occupied Poland, where he tried to use his prestige to improve Nazi treatment of the Poles. He met with Hermann Göring (whom he knew from before the war) but his efforts were futile.
He was briefly imprisoned by the Germans during the Warsaw Uprising in 1944. He was eventually released, with most of his possessions confiscated and nationalized by the communist government.
He retired from public life and died in 1967.
Son of: Ferdynand Radziwiłł and Pelagia Sapieżanka. Spouse: Anna Lubomirska. Children: Edmund Ferdynand Radziwiłł, Krystyna Maria Radziwiłł, Ludwik Ferdynand Radziwiłł, Stanisław Albrecht Radziwiłł.