Jan Skrzetuski was created in 1884.

The cast of Obrona czestochowy - 1913 includes: Stefan Jaracz as Michal Wolodyjowski Bronislaw Oranowski as Andrzej Kmicic Lucjan Wisniewski as Jan Skrzetuski Kazimierz Wojciechowski as Jan Skrzetuski Aleksander Zelwerowicz as Jan Onufry Zagloba

The cast of Na meline - 1981 includes: Kazimierz Dejunowicz as Szarak Jerzy Kaczmarek as Glosny Jan Kociniak as Zbirek Stanislaw Mikulski as Lieutenant Kazimierz Opalinski as Beggar Alojzy Szynalik Ludwik Pak as Photographed Guerilla Janusz Paluszkiewicz as Sergeant Skrzetuski Wojciech Pokora as Guerilla Sylwester Przedwojewski as Photographed Guerilla Marian Rulka as German Soldier

"Jan" is the polish name for "John".

Jan. 1981 - Jan. 1989: Ronald Reagan

Jan. 1989 - Jan. 1993: George H.W. Bush

Jan. 1993 - Jan. 2001: Bill Clinton

Jan. 2001 - Jan. 2009: George W. Bush

Jan. 2009 - present: Barack Obama