To secure succession Mikołaj went to Avignon and was appointed a bishop by pope Urban V and consecrated on 13 December 1365 by Cardinal Elijah, Bishop of Ostia.
Mikołaj Radziwiłł | Mikołaj "the Black" Radziwiłł | Mikołaj Rej | Mikołaj Krzysztof "the Orphan" Radziwiłł | Mikołaj Sęp Szarzyński | Mikołaj Sapieha | Mikołaj Radziwiłł (1470-1521) | Mikołaj Firlej |