He is the son of Jerzy Różycki, one of the three Polish mathematicians who worked on Enigma decryption from December 1932 through at least the Phoney War (1940).
Their son, Janusz Różycki, born May 10, 1939, would complete his studies at Warsaw's Academy of Fine Arts and go on to be a member of the Polish fencing team that won a silver medal at the 1964 Tokyo Olympics.
Janusz Korczak | Janusz Kusociński | Janusz Radziwiłł | Janusz Radziwiłł (1612-1655) | Ludomir Różycki | Jerzy Różycki | Janusz Tazbir | Janusz Różycki | Janusz Kurtyka | Janusz Centka | Janusz A. Zajdel Award | Janusz Zajdel | Janusz Witwicki | Janusz Spyra | Janusz Skumin Tyszkiewicz | Janusz Radziwiłł (1612–1655) | Janusz Minkiewicz's | Janusz Minkiewicz | Janusz Magnuski | Janusz Liberkowski | Janusz III of Masovia | Janusz Gortat |